How would you make this scene funnier in my novel when a geek loses a NAKED bet?

Alison and Martin were both college freshmen who have always been best friends, but JUST friends. Alison was the more outgoing and popular of the two, and even though Martin was a complete geek, Alison always had to admit he had a cute bubble butt under those nerdy khakis that she would sneak glances at. They make a bet on who could score higher on the next history test. The winner chooses the loser’s punishment & gets to be there to see that they do it. Martin has always had a crush on Alison, so since he knows he will win, he has a pathetic idea to make her go skinnydipping so he can watch. Martin NEVER thought he could lose, but does! Alison hears of Martin's pervy plan. He is always SO arrogant about being the smartest. Alison’s cousin, unknown to Martin, runs a NUDIST resort that she gets Martin to stay at for free, for an entire week by himself. Alison drives him there, then, when the receptionist asks for his clothes, Alison insists on waiting to see he really does it. After stripping & standing at the front desk for a few minutes, squirming, he finally gets his keys, and Alison gives him a HARD slap on the tush, & laughs out loud as the buck naked Martin runs into the sunshine.

This poll was created on 2014-10-31 22:35:26 by Monica141414