their mom's outside in the watchmobile. and if they go for it, how do you think you're gonna be feeling? >> scared. terrified probably. >> reporter: she told luke and nevada they were here to fill candy baskets to be donated to a local food bank. the baskets will be donated. >> now we're going to just filling out the eggs with as much candy as we want. >> reporter: but what they don't know is in a room down the hall. there's a table full of treats and a gun placed where they can't miss it. it's a prop gun that looks and feels real. will they resist the urge to touch it? you nervous for them? >> yes, i'm really nervous -- >> reporter: after they work hard at filling the baskets, dr. ray's research assistant tells luke he can take a break. >> you go ahead and get started on your break. >> he likes the candy. >> reporter: hit the jackpot. he's so busy dancing, he doesn't spot the gun, but then. >> he sees it. just saw it. he's giving it a second look. so far he's not touching it but he hasn't done anything about it yet. >> rep

eric's mom and dad are with me around the corner in the watchmobile.worried that this is a trick their helpful son may fall for. you ready to see how he does? >> yes. let's see. >> reporter: their eyes are glued to our hidden camera monitors, as eric walks out onto the street and sees our actor. >> what's up, man? john. remember me? >> yeah. >> reporter: as our actor draws eric in, his parents are holding their breath. >> finishing work, do you mind helping me out with this real quick? >> no problem. no problem, i'll help. >> reporter: now, as their son steps toward that open door -- >> can you just go in the middle, and i'm going to hand this to you? >> reporter: his parents aren't surprised he agreed to help but pray he will know better than to get in the truck. >> you just want to grab -- >> he's a goner. >> got him right in there. >> so just grab that. okay. >> reporter: our actor shuts the door and drives off with eric in the truck. >> we just lost our son. >> oh. >> what were you feeling in that moment when that door closed? >> that was the kille

and their dad is watching from our watchmobile.he bully takes a picture of our victim, and posts it with this commment, >> he's like, "no wonder why he voted harry potter. that's who he bases his outfit on. hashtag nerd." >> and then connor sees all the comments? >> connor sees. he's following. >> reporter: the bully turns up the heat, calling our victim "the biggest nerd ever" and then writing -- >> the latest comment, you'd be so much better if you wore a bag over your head." >> reporter: this time, one of the bullies actually asks connor to "like" the post. >> [ laughs ] but you totally gotta like it, or leave a comment or something. >> this is a lot for him to deal with. >> reporter: connor appears deep in thought. after one more look at our victim, he decides what to do. he puts his phone down, practically out of reach. the message is clear, he won't join in. >> he literally was being pressured by somebody, and he didn't do it. >> he shows compassion to people that are getting picked on. and i pretty much felt that he would do

. >> their parents are in our watchmobile, seeing it all unfold on our hidden cameras. >> i want to say do something, say something. >> dating, sex and the social scene. what to do, whatnot to do and what should you do if you see someone else in trouble. >> the door was open a crack and she had her shirt off. i'm going to put it on instagram. >> the kids watching are real, the kind of dangerous situations your kids could face that day. >> just to liven things up. >> it's really hot in here. >> are you okay? this isn't funny. >> jim, you've got a head strong daughter. >> get your teen to turn off their phones and watch this together. >> on the edge of your seat. >> these teenagers could teach us all something. >> don't touch her. what is wrong with you. >> it's dateline's "my kid would never do that: the party safety" edition. >>> see something, say something. great advice, but how often do we follow it? if it's hard for adults. it's got to be tougher for self conscious teens, especially if it involves other kids and sex. so we decided to put teens to the test with their parents observin