14 years old eh? I assume you play video games? If you are good at it, make a few bets with your friends that you can beat them at Halo or something!
I once played dumb (played really badly, said I didn't understand the controls), then said that I'd probably still kick his ass in one on one, we placed a bet, 3 games later I got £20 out of him!
Played him for a chump, he wasn't a nice guy, so I didn't mind the whole bad karma thing