facebook and follow us on twitter. and don't go away. "20/20" starts right now. tonight on "20/20" -- teen confidential. school's out. summer's here. so, meet the class of 2013. the class clowns. torching their skin. snorting condoms. and smoking alcohol on youtube. >> now you can actually get global attention, by being an idiot. >> the class couple. and not just any couple. because he used to be a she. and she used to be a he. >> it is so ironic, because the part that you want, you had -- >> it's perfect if we just switched. >> the girl most likely to stand up to a speech like this. >> don't you dare tell anyone you're a virgin. keep your pants on! >> not backing down, even when

everybody put her down. and worse. >> school is supposed to be a place where you are safe, not where you should be shamed. >> the show-off. >> i put up one picture, private jet, not to be obnoxious and put up a million. >> who are these people? studying another species. >> and, what happens when the class geeks get into the top ivy league schools, but blow them off to gamble on their own risky business? >> i think we're a lot cuter, so, like, we definitely get more attention for that reason. >> they got our attention. the class of 2013. here's elizabeth vargas and david muir. >> good evening. this week, that momentous news out of washington and the supreme court, the overturn of doma, allowing gay couples to marry, recognizing their love for one another. tonight here, we start with a different kind of love story. two teenagers who completely changed their identities, shunned, targeted and alone. until they met each other. >> and once you meet them, you will never forget them. and you won't forget their mothers, either, who played

match maker, supporting their children every step of the way on their long and often painful journey of transformation. here's deborah roberts with what every high school has -- the class couple. >> reporter: it's friday night in tulsa, oklahoma. 18-year-old katie and 17-year-old boyfriend arin are getting ready for a night out on the town. the young sweethearts have been dating for more than a year and clearly remember the first moment they met. >> she walked in and i was like, "who's that girl?" >> he was just so handsome. i couldn't keep my eyes off of him. he would look out and see me, and i'd look away we'd be on the dance floor, i'd be dancing, i'd turn around and he'd be there. >> reporter: instant attraction? >> oh, yeah. >> instant, yeah. >> reporter: katie and arin are like any other teenage couple in love, except, and it's a big except, they were each born the opposite sex.

that's right, arin was born a girl. katie, a boy. they're transgender. last year, katie had her body transformed with gender reassignment surgery. for now, arin is simply taking male hormones. when you undress, though, you still have female genitalia. >> from face up, i look male. and when i get my clothes off at home at night, i've still got breasts and the female, biological genitalia. >> he walks like a man, talks like a man. he is a man! even if he has breasts, or has a vagina. it doesn't matter. >> reporter: and it is so ironic, because the parts that you want, you had and now you -- >> she got rid of them. >> oh, yeah. it would just be perfect if we just switched because, you know -- >> you can have my uterus! you can have it all. >> he had the perfect breast size that i wanted. i said, well, you can have my penis! that would be great! >> reporter: oddly enough, it was katie's mom, jazzlyn, who brought them together, after seeing arin at a local

transgender teen support group. >> we've got to get you two together. and i said, you know, you'd be perfect for each other. and i thought, who in the world would understand more of what she's feeling, and what she's gone through than a boy that's going through the same thing she's going through? >> reporter: katie, born luke, had struggled with gender identity ever since she was a toddler. >> i had male genitalia, but everything else was feminine. the waist, the butt, the cheekbones, the hair, the eyes, everything, the voice. it was really confusing for me, growing up. >> reporter: at what point did you feel like you weren't meant to be luke? >> 3 or 4. i remember when i was 4, running into my mom's bedroom and pulling on my, you know, penis, saying, i want this off, mom. off, off.

>> reporter: what did you think of that as a mom? you had to think that was pretty strange? >> but there was so much other stuff. when kale tee was luke, she was such an extreme, feminine little boy. everything he did he swayed through it. it was very, you know, ballerina type. i just started going, oh, okay. i need to start preparing for the fact that, we have a gay son. >> whenever i would go to sleep, i would dream myself wearing a white wedding dress, with long flowing hair, the perfect image of me as a woman. >> reporter: just 15 miles away, arin was the perfect image of a little girl. her mom named her emerald and was over the moon. >> when i had her, i was like, "yes! i got a girl." i wanted a girl so bad. she was like, the best thing that's every happened. >> reporter: denise put emerald in dance and pageants. she was so proud of her daughter's accomplishments, never realizing how uncomfortable emerald was in such a feminine world.

>> i just felt out of my place. like, i wasn't supposed to have this dress on, i was actually supposed to have pants on. i identified with the guys. i thought i was a guy. >> reporter: growing up, luke and emerald both felt like outcasts. so, you had to endure a lot at school. >> i was bullied there for, like, ten years. >> reporter: because you were an awkward girl? >> because i was different. i talked like a man, i walked like a man, but i wore a skirt. >> reporter: he was depressed and isolated. just like katie. >> she spent her whole childhood in the corner of her room, with the door closed and the lights out. >> everyone hates you, and you hate yourself. you know, there's no one on your side, not even you. my first attempt at suicide, i was 7. one time, i tried to drown myself in our pool, with cinder blocks. >> reporter: a staggering 41% of transgenders will attempt suicide.

it was jazzlyn's worst fear. >> i think it was just the matter of days. >> reporter: and you hear your kid in the other room -- >> i literally just started yelling at him. i know what you're getting ready to do and i'm not going to allow it. i said, just tell mel you're gay. we'll get through it, we'll figure it out. it's not that big of a deal. he finally just yelled at me that he was transgender and i just kind of stopped. >> reporter: did you have any idea what transgender was at that point? >> i guess i thought that transgender was transvestite. and i'm just thinking, okay, so, you want to wear girls clothes. i got a whole closet in there. go! if it will make you happy and it will keep you alive and it will make you laugh, you know? i've never seen you laugh, in eight years. >> she asked, will this make you happy? will this make it so i don't have to be afraid of coming home every day, and be afraid of

seeing you dead on the floor? and i said, yes, this is going to help, mom. this is it. this is what i need. >> and i said, you know what? just tell me what you want. i will do anything that you want me to. the very first thing out of his mouth was, he says, i want bras and panties. i said, fine. we'll go to victoria's secret tomorrow. >> i wanted to change my name, i wanted to get on hormones -- i wanted to grow my hair out, be called she and her and katie, not lucas. and >> and i don't care if it takes every ounce of being in my body. i will not stop until everything on that list is done. >> and damn, she did it. she sat my family down and said, lucas is now katie. he is she. if you have a problem with it, there's the door. >> reporter: the defining moment for arin came at age 14, struggling to live life as a girl. he was kicked out of a private christian school. >> i was asked to leave, because i put on too many suspicions that i was a lesbian.

i went home that night. i curled up in a ball and cried. i had a knife and i tried to slit my wrists. >> reporter: in the depths of despair, arin searched the internet for answers, and realized he wasn't gay, he was transgender. >> it's like being sick for years and not knowing what you have, and that moment when you figure out what you are, you can help yourself. you know, it's like one of those great moments. >> reporter: he broke the news to his mother, denise. what is it like, as a mom, hearing your only daughter say that you don't really have a daughter? >> well, it's hard, i mean -- i was losing my little baby girl. when you have friends that have had daughters with you, and they're going to the prom, and picking out dressing and -- i'm going to miss all that. >> she had to mourn the loss of her daughter. i mean, no parent wants to go through that. >> is the right needle on there? >> reporter: now, instead of helping emerald prepare for

dance recitals, she helps arin with his testosterone shots. an unusual perk of their relationship -- the teen lovebirds can swap clothes! >> this is pretty pink -- jaw-droppingly gorgeous like the first time i met you. >> reporter: katie has her pick of arin's old dresses. >> i had to wear that dress three times. if you would have told me a year ago that i'd be in the place that i am now, i would have been like, good joke. >> i would have laughed in your face. >> you know, it's funny, where, where i've been, and where i'm going. because i would have never known that thud would have happened to me. >> they were robbed of their childhood. >> marshmallows. yeah. >> they're just trying to catch up on life, and they're living it and they're loving it. >> since then, deborah tells us that arin has undergone even

more of a transformation. undergoing surgery to remove his breasts. what a story. you can tweet us using #abc2020. elizabeth and i will be right back. next, idiots on the internet. you decide. >> what is that? >> hurting yourself for entertainment. but snorting condoms? >> i'm going to do a challenge that i probably shouldn't be doing. >> i think some teens think that they're, like, one video away from becoming a celebrity. >> fire. class clowns, when we return. mike likes bikes. and denim shirts.

and blankets with stripes. so mike comes to target, who's making products with feed to give meals to people across america. mike's bike gets him to kate's house. his shirt looks great. and his blanket gets him a date. but his blanket also gives 24 meals. his shirt gives 20 meals. and his bike gives three hundred and twenty. so now sarah gets lunch. a family gets dinner. and lots of people smile. mike did a great thing. and the people he feeds will too. thanks mike. enjoy the bike. vo: i've always thought the best part about this country is that we get to create our future. you get to take ownership of the choices you make. the person you become. i've been around long enough to recognize the people who are out there owning it.

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"20/20" continues with teen kfl confidential. there has never been a shortage of stupid teen tricks, and they are going even further. so, here is dan harris with this year's crop of class clowns. >> reporter: school is out for

the summer and the internet is primed and pumping with adolescent idiocy on steroids. these days, the stupid teen tricks are more outrageous than ever. digital age teen jack-assery even has its own vernacular -- planking. the cinnamon challenge. and eyeball shots with tabasco sauce and vodka. but those stunts are now hopelessly passe. here's the new thing. it involves salt, a few cubes of ice and voila -- third degree burns! >> what is that? oh, my god! >> reporter: whoever can stand it the longest wins. >> oh my gosh.

>> it's a condom. >> reporter: think you've had the sex talk with your teen? well you probably never imagined you would have to tell them where not to put a condom -- condom snorting is one of the hottest teen trends online right now. >> i'm going to be doing a challenge that i probably shouldn't be doing but that's okay. >> did you hear that? >> reporter: yeah. >> i probably shouldn't be doing this, yet-- >> reporter: she knows. >> yeah. >> reporter: we're going to stop the video here because this is pretty gross, but that condom goes up her nose and comes out her mouth. >> i know what it means to be a teen in trouble. >> reporter: josh shipp is a behavior expert who has appeared on the reality show "teen trouble." >> there's actually a lot of dangers with the condom challenge. they can get caught. you can suffocate on it. >> reporter: if they're not inhaling latex -- >> get oxygen into the bottle. >> reporter: they might be inhaling alcohol. smoking this type of stuff, does that actually do anything to you? >> this guy's claiming that he can get a buzz off of it. >> reporter: not just a buzz but >> oh, dude.

>> reporter: not just a buzz but rapid intox case, because the alcohol vapors bypass the stomach and heads straight to a teenager's brain. a brain that is, by the way, already at a disadvantage. is this an illustration of the fact that the part of a teenager's brain that regulates stupid impulses is not physically fully developed yet? >> yeah. this is a phase in their life where they are the most impulsive. they're thinking, you know, "will this be funny? will people think this is cool?" >> reporter: something else thenning and it isn't a new trend at all. a study out just this week shows teen speeding is on the rise. 18 year-old pranjal dahiya raced down this dark road at 110 miles an hour. >> oh, jesus, take the wheel! >> reporter: his friend was driving. pranjal was filming. when you were speeding along, did you think, "this is pretty funny"? >> it was more like, "yeah, this is sweet." like, "yeah, we're cool. look at us, going fast at

night." >> i think some teens think that they're, like, one video away from becoming a celebrity. they want to be known. they want that attention. >> hope you all enjoyed that. >> reporter: daniel jensen, an 18-year-old from california, gets lots of online attention because of high jginnings like this. his latest stunt was inspired by this nike video with kobe bryant. >> it popped up in my head and i was like you know what i think i want to try jumping over a car. >> reporter: but a parked car wasn't enough -- daniel was set on one that was speeding towards him. perhaps the only person with less common sense than daniel was the driver. >> my biggest concern was how he would know when exactly to jump. and he told me don't worry about it. >> i was supposed to have her drive towards me, about 40 miles an hour. and by the time i came down, she would be gone, so i wouldn't land on the car. but i jumped too late.

i felt myself in the air. >> i closed my eyes and the first thought that went through my head was -- oh, my goodness, i just killed daniel. >> i just threw my feet down. and i was like "did i land that? i didn't die?" >> reporter: daniel posted his video on youtube just two weeks ago and it has already impressed hundreds of thousands of viewers, but not his father. >> he made me promise not to do anymore stupid things. but we have different opinions of stupid. >> reporter: is there any risk that by showing these videos that we're encouraging people to do this kind of moronic stuff? >> we cannot protect our kids from seeing these sorts of videos. this is an opportunity for you to talk to your kid about them >> reporter: and this part is key. he says, you have to talk in a certain way to be effective.

>> here's the idea. lecturing leading to them tuning you out. but questioning leads to critical thinking. >> reporter: do you think this is dumb? >> right, instead of saying, this is the stupid, do you think this is stupid? but furthermore, you need to show them what the possible dangers are. find a video where it goes terribly wrong and show that video. >> reporter: this is that video. remember pranjal? as he recorded his friend speeding at 110 miles per hour the car hit a curve. >> i heard, like, the car screech. and then i, like, flew out the back. my entire body was numb. i broke my c-6 vertebrae. and then when it broke it, like, shattered, that paralyzed me from my neck down. >> reporter: he has spent the last year recovering and adjusting to a life that will now be lived in a wheelchair.

all this because of -- >> like, maybe 45 seconds of being stupid. >> reporter: which will be with you forever. >> forever pretty much, yeah. >> reporter: what's your message to kids? >> you can definitely have, fun, but there's always that limit, and don't, like, push it, push it, push it. >> reporter: do you point to your legs and said, "this can happen to you?" >> yeah, i mean, i was that kid. like, it's not going to happen to me. but then, like, it did happen. next, a speaker pushing high school buttons about sex. >> don't you dare tell anyone you're a virgin! keep your penalties on! >> until one student stood up and pushed back. but with a backlash she never could have imagined. >> it started out with people saying, you know, she's a slut, she's a liar. >> when we return. go! go olive garden. go 2 for $25.

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"teen confidential "continues. once again, elizabeth vargas. >> there is an explosive new phrase that's making its way into the vocabulary of teenagers this year. it is "slut-shaming." and it nearly tore apart one girl's life, making national headlines. i sat down with her just this week. these are the sounds you might typically hear in the hallways of a busy high school. but on one early morning in april of this year, this is what the students at george washington high school in charleston, west virginia, were hearing. >> oral sex is sex. don't you dare tell anyone you're a virgin! >> reporter: nearly 1,000 students on their first day back from spring break, sat in an assembly in disbelief. as this provocative christian speaker, pam stenzel,

preached to them about practicing abstinence. >> let me tell you something. i'm pretty sure i know about you. >> reporter: stenzel is an internationally recognized, highly-paid lecturer. >> keep your pants on! >> reporter: brash and absolutely unabashed, she travels the world, speaking to more than a half million young people each year about what she says is the importance of self-restraint. >> if you are here today and you're a virgin, can i say this to you just in case you don't hear it again. good for you. good for you! >> reporter: but one 18-year-old honor student named katelyn campbell was so outraged by the tone of the speech, she gave it a very loaded label. slut shaming.

>> slut shaming was just the word in the vernacular of gw and the -- >> reporter: it wasn't -- that you were saying it. you were coining the vernacular. as you put it? >> yeah. i mean, it's -- it's your prerogative who you wanna have sex with. it's none of my business. >> reporter: slut-shaming is the modern-day scarlet letter. usually teens calling out other sexually active teens. and mostly online. in this case, katelyn couldn't believe the arrows were being slung by an adult hired to speak to her school about sex. >> the tone in her videos was really combative. it just seemed like she was going out to get anyone who'd already had sex. >> reporter: this wasn't just any student. katelyn is a student body vice president. her 4.8 gpa earned her a chance to speak at graduation, and a scholarship to wellesley college in the fall. yet the decision to speak out against stenzel would turn this once-popular student into a pariah. >> it started out with people saying, you know, "she's a slut, she's a liar, she's doing this for attention. i bet she's being about skin innocent, but not by choice." >> reporter: arguably, she was already outnumbered. west virginia is known for two extremes. the antics of those hard-partying college kids on

the reality show "buck wild." >> being a country boy in west virginia is like living in one big play ground. >> reporter: and its deeply devout conservative roots. >> there's certainly a very religious, very pro-abstinence group in my community who really does believe that method is effective. >> reporter: her crew crusade began the night before stenzel's speech. she had gotten a tip from a teacher who had seen this flier. >> one of the key lines was that pam stenzel will be coming to gw to discuss god's plan for sexual purity. and gw is a public school, which is really what threw me for a loop. >> reporter: what katelyl didn't note that was that the visit was funded by a conservative christian group, believe in west virginia. buff she found pam's videos on youtube and that was enough to set her off. >> you are doing it before you watch the aisle, you're going to do it after. past behavior predicts future behavior. this isn't rocket science. this is an sane. >> reporter: here's her message

for daughters that put their daughter on the pill. >> this girl could end up sterile or dead. >> reporter: katelyn decided to boycott stenzel's talk at the school. but junior carly thaw was there. she recorded it on the iphone. >> you are scarred for life. >> reporter: she couldn't believe your ears. >> you've got all this scar tissue. you have pelvic inflammatory disease. >> she just axccelerated and go really loud and kind of abrasive. >> reporter: it is unconscionable that anyone in this gim would ever have sex with another human being and not honestly tell that person everywhere you've been. >> reporter: she's very aggressive and very strong and forceful in her condemnation of anybody having premarital sex. >> for her to tell people that if you've had sex before you're mare. >> reporter:ed, you're impure, there's nothing you can do about

it, you're screwed for life was just like -- what are you saying? >> reporter: according to carly, the assembly sparked plenty of anger and even some tears. >> she's sitting there telling us that we're trash and we're useless if we've had sex before. school is supposed to be a place where you are safe, not where you should be shamed for what you have or haven't done. >> reporter: you know west virginia does have one of the highest rates of teen pregnancy. >> number nine. >> reporter: some may argue that the speech might help a couple teenagers avoid making a bad decision. >> i mean, it very well might. if you are afraid of having sex, then you probably won't. but i think there's a better, more scientific way to address sex than saying, just don't do it. >> reporter: after seeing her friend so distraught, she went to the media and gave about interview to the local newspaper. it landed her in the principal's office and she says he was furious. >> how would you feel if i called your college and i told them what pad character you have and what a back stabber you are. >> reporter: your principal said

this to you? >> yes. >> reporter: did you feel this was a real threat? >> i did. >> reporter: she was afraid of losing her $25,000 annual scholarship. but that didn't stop her from stirring up the hornet's nest. her story went nation. she appeared on cnn, and in "seventeen." magazine. >> scared off in court today. >> reporter: and she took the threat so seriously, she filed an injunction against him and the school board to prevent them from retaliating against her. including calling the school? >> yes. >> are you ever going to retaliate against miss campbell? >> i wouldn't retataliate again any kid. >> reporter: but that's when she says the community turned against her. there was even a facebook page. >> as i walked down the hallway, everybody went silent. one of the football players actually spied on me it was really gross. >> reporter: you are shocked at all that people would respond this way? >> i mean, i understood from the beginning that it was a really

difficult issue. but i never expected people to outright dislike me for that. >> reporter: we reached out to the principal and the school superintendant. neither of whom would talk to "20/20." so, we went to the school board president to ask who okayed pam's visit to the school. >> that is a mystery. i know that she was paid for privately. >> reporter: you don't have any idea who at the school actually decided to have her come and speak to the entire school in an assembly? >> if i was put on the stand and put under oath, i really don't know. >> reporter: next time, it won't be a mystery, thanks to katelyn's fight. the school board has passed a policy. from now on, any speecher eon religion or sex must be okayed by the school board. >> she's a hero. she is a girl who knew in her heart that she was right, who

stood up for her beliefs, who stood up to authority. when she was at risk. >> reporter: pam stenzel declined our invitation for an interview. she continues to speak around the country. as for katelyn, she doesn't intend to keep silent, either. while he injunction against the school was denied, her scholarship is still guaranteed. how much did it mean to get that kind of support? >> it was exactly the validation i needed. >> reporter: just last week, she received a national student leadership award and she hopes to one day become a lawyer for the american civil liberties union. >> i feel like i've been given a unique position to be a vehicle for social change. i have the mike. i may as well use it. >> so, what do you think about what katelyn did or about the speaker? whose side are you on? let us know using #abc2020. we'll be right back.

next -- they're living the lifestyles of the young, the rich and the fabulous. and you're not. >> people get pissed off at other people having fun. life's not always fair. >> so, why are we flocking to them on instagram in record numbers? >> there are some people that you kind of get the feeling that they want to rub it in people's faces. ♪ i get what i want >> the show-offs, when we return. it starts with something little, like taking a first step. and then another. and another. and if you do it. and your friends do it. and their friends do it... soon we'll be walking our way to awareness, support and an end to alzheimer's disease. and that? that would be big. grab your friends and family and start a team today. register at alz.org

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"teen confidential" continues. once again, david muir. >> we all post things on facebook and social media, moments of accomplishment, proud milestones in the lives of our chu children. but the so-called 1% are posting photos of how fabulous they are, all the time, everywhere.

rubbing our faces in it. some people, though, are eating it up. here's nick watt tonight with the school show-offs. >> hi, my name is laura. >> reporter: welcome to a day in the life of laura. >> going to be spending the day with us. say hi. >> reporter: here's what laura is doing this summer. yep, she's hanging out in a yacht in the south of france. she's an international brat setter, a band of the bold and the brash, ridiculously rich teenagers who were born this way. laura, who calls monaco home, tells us her interests include travel, vip partying, fashion and luxury. >> this is really bad service. >> reporter: laura likes to upload her lavish life onto instagram. here she is in capri, miami, paris and london, staying in a hotel i could never afford. >> i'm in love with these ones, should i take them? >> reporter: laura is just 18. she's still in school.

laura is an rkoi. that's a rich kid of instagram. a whole bunch of snot-nosed millionaires who post snapshots of their everyday lives on this photo sharing social network. the most fanatastic/awful, depending on your p.o.v., are collected on this tumblr page. you know, posing with private jets, stepping off yachts and a 16,000 pound, that's nearly $25,000, bar tab run up in a london club. yes, they really do this. and people really follow them. >> you're like at the zoo and you're like, "what are these people? how are they living?" it's almost like studying another species. i think it's interesting. >> reporter: dina gachamn writes about the 1%. >> there's been that world always. it's just so in our face now with social media. >> reporter: these kids started out posting picks for their friends, you know, kind of like the rest of us would post shots of a great burger. they post a bentley.

>> it can get obnoxious. it's like all right, enough with the pictures next to your car. i put up one picture of the private jet. i'm not going to be obnoxious and put up a million. >> reporter: meet michelle madonna. in her teens, she almost had a pop career with a single called "i'm a brat." and a short-lived reality tv career. now she's a designer. a real life material girl who actually works. >> i design flower headbands. >> reporter: daughter of a big time businessman, she will be a fashion mogul by 30. >> i love being the center of attention. >> reporter: her instagram -- bikinis, music festivals, and rolling with the it girls. >> people get pissed off at other people having fun. but life's not always fair. >> reporter: why do they show us this stuff? >> within their world, they're probably just like, hey, i saw your yacht, here's my yacht. but there are some people you kind of get the feeling they want to rub it in people's faces. >> reporter: now, this is my favorite teenaged instagram post

of all time. a groomed, young stallion, posing with a horse. you grew up privileged? >> blessed, i would say. >> reporter: we came to orange county, california, to meet the most interesting teen in the world. >> my name is bradley scott montgomery. >> reporter: these are the kind of photographs bradley scott montgomery posts. a bentley, caviar, box fresh croc-skin shoes. have you ever taken a shot and thought that's just too much? >> i've caught myself on a few of the beptley pictures. >> reporter: brad's parents apparently made a little money in finance. hobbies -- business. favorite clothes -- fine cut suits. >> i like italian. >> reporter: favorite meal -- business lunch. who talks about business lunches? >> brad montgomermontgomery. >> virgin mojito. >> reporter: age?

well, the kid's just 18. he's just graduated high school and he wears french cuffs. but and here's the but -- sometimes teens use social media to create who they want to be. and i'm afraid we gradually real iszed that brad is not all that he seems on instagram. that horse -- isn't his. >> the horse is actually a good friend of mine's. she has a stable in her backyard. the bentley isn't his, either. brad actually drives a ford focus. >> i've gone on road trips in this. >> reporter: stain on my seat, as well. and the caviar? >> i still at this point haven't had caviar in my life. >> reporter: try and look rich? maybe brad just likes the online love. >> did it work? >> reporter: now, don't get us wrong. he's well off, just not own your own bentley rich. and brad might really make it one day if he works as hard at the investment company he just founded as he does cultivating his suave online persona. meanwhile, back in monaco, laura tells us she has some vague ideas about "creating

something." >> there's an opening party at the port tonight. i think i'm going to need to buy heels. >> reporter: laura, i suppose, has already made it in life, without even trying. what would make these three teenage boys blow off princeton, m.i.t. and harvard? the answer is in this parking lot, when we come back. [ male announcer ] snap out of your snack routine

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for many of us, our cars are deeply personal. we really don't want anyone else using them. well, you're about to meet three teenage boys who are betting their futures on the notion that you will rent your car to someone else. so, what's in it for you? here's chris connelly with three self-professed geeks and their great idea. >> reporter: whip smart, forward-thinking teens, primed for the prestigious colleges that accepted them. they are among the finest minds of their generation.

>> i think we've always sort of been geared to the mindset that we want to do something extra. >> reporter: 18-year-old rujul zaparde is a classics scholar who got into harvard. 19-year-old kevin petrovich is an acclaimed pianist who picked princeton. shry ganesh-ram, 19, didn't even graduate high school before heading off to m.i.t. yet these three high-achieving guys all then blew off college. you want to campus preview weekend and that was enough for you to say no? >> the weekend was great, but you know, couldn't -- flightcar was too good an opportunity. >> i decided i kind of wanted to do something more hands on and get some real world experience. >> reporter: meet the founders of the fledgling business flightcar, a car rental company here near the airport in san francisco. a so-called peer-to-peer outfit, flightcar allows customers to rent and drive other people's cars. here's how it works.

let's say you're going out of town. instead of leaving your car at long term parking, you'll drop it off at san francisco's flightcar. then they will rent your vehicle to someone coming into town. >> the big draw, i think, was the convenience. the price. and the type of cars they had. >> reporter: while others may just see cars coming it in different airport lots, these three saw an opportunity. >> thousands of cars that are owned by different people, paying $18, $30 a day just to have them sit there doesn't make sense. >> reporter: rates for renters are rock-bottom, starting around 4 bucks a day. and how does that compare to avis or hertz? >> you'll probably be paying at least around $40 or $50 a day at, you know, one of the major rental chains. >> my car's not doing anything, why am i just paying for it to

sit there. >> reporter: flightcar launched in summer 2012. and with their locations at boston's logan airport and here in san francisco, the company says they now have an average of 150 cars on the road. at any one time. are you guys profitable yet? >> not yet. i don't think it's about how fast we get profitable. it's more about how fast we can make this company big. >> reporter: well, they raised $6 million in venture capital fast enough. this teenage dream has even gotten some dough-re-mi from the -- uh -- "idol" rich. ryan seacrest gave you money. >> he just loved the concept and we're very obviously happy to have him on board. >> reporter: when it's time for the trio grande to kick it with big money types, dressing for success often means pulling on the hoodie. >> sometimes we dress up a little more. generally speaking, i'm not this dressed up. i never wear collared shirts, generally. i actually had to buy this in order for this -- for this interview. that's how rare it is. >> reporter: it's not rare to

realize the six-figure sums four years at college can cost. at those prices, struggling to get a b.a. might seem like a lot of b.s. maybe that's why their moms and dads didn't lose it when they ditched school. >> my parents were like, okay, well, if this miserably fails, which it probably will, then he'll go to college. but obviously, you know, things changed. >> we thought that if we waited even a year, it would -- the train would leave without us. >> reporter: at the time when you guys hatched this idea, did either of you own a car? >> ah, no. >> no. >> reporter: to protect the people that do own the vehicl vehicles -- flightcar checks the driving records of all of its renters. but their slogan suggests a trust factor. >> runs on car-ma. we really do trust them. >> reporter: it's a lovely sentiment. let's face it. people aren't always gentle to a rental. >> the idea of someone else in your car, you just really don't

note what they're going to be doing in it. >> reporter: what happens if you get a guy who really wants to give that rental car a beating? >> the common demographic for renters is people 50-plus. that's surprising for us. they just tend to be more responsible and they also realize that, hey, it's somebody else's car. >> reporter: what they might have lacked in experience, these two needs higher learning teens say they've gained in pure gumption and youthful thinking. >> even when we are talking to the city and they tell us that something will take two months, we're like, what? we need it in two days. >> reporter: they are already talking to the city. the city attorney, who is suing flightcar for refusing to pay the airport fees that the big boys fork over. >> like every business, they have to play by the rules. it's not fair to other companies that do play by the rules when they've got a competitor who is cutting corners. >> reporter: the only thing they're cutting is class. how many cities will you be in

if we have this conversation two-year-otwo years from now? >> a lot. hopefully 20 or 30. >> so, what do you think? what would you do? tell us on twitter, use [ male announcer ] snap out of your snack routine

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that's our program for tonight. thank you so much for watching. i'm elizabeth vargas. >> and i'm david muir. from all of us here at abc news and "20/20," have a great evening and a great weekend.