This is THE stupidest idea for a prank at school ever. Nobody will think it's funny. Everyone will laugh at you and think you and your buddies are giant retards. Why do so many people on this forum have such an orgasm over an emoticon? Like in that skype thread in summer 06, like every prank call to walmart consisted of "Oh hi. Do you guys have the dodgy balls? What about dodgy cereal? ahahahah dodgy! *cums in pants*
Go for it though, but I expect you to report back on how much you get made fun of.
idk why the fuck people are so obsessed with the dodgy its kinda fucking lame now. if i saw a kid wearing a dodgy shirt or drawing dodgies i'd probably punch them.