tough on stains. gentle on skin. new all free clear oxi-active. your kids will each take care of our class hamsters, lewis & gentclark.skin. then i'll tell them the story of pluto, the sad little planets, the fractions, and some cold blooded ones, the dinosaurs. [sfx: dinosaur growl] clark! anyway, here's what they'll need: markers, scissors, crayons, pencils, folders, juice boxes, pretzel sticks, glue sticks, tape that sticks, and glitter. so much glitter. school takes a lot. target has it all. >>> coming up, "good morning america's" sneaky teacher sponsored by target. >>> all right. now to the chemical that some call the fountain of youth in a bottle. would you inject yourself with it every day if it made you feel years younger, even if it caused cancer? well, tens of thousands of people are doing it despite the risk and abc's andrea canning is here. you spoke to a couple who are doing this. >> yeah. there's a couple who absolutely swears by this, robin. the chemical is human growth hormone or hgh. you may have heard of it because pro athletes such as roger clemens have fought allegations that they've taken it illegally. but the couple you're about to meet believe it is the secret