Let Bob win

Sat next to you Bob is frantically pounding his meat, and as you look at the glistening prick in his hand you can't help but wonder what it would feel like being pushed inside you.

You slow your pace to make sure you last, and a few moments later Bob groans and his spunk flies out and up onto his own chest. He notices you looking over and grins maniacally,

"Yes! I win again, you're in trouble now, I've already picked the film you're gonna be copying. It's a gauge one..and she does everything you can think of"..he ends this sentence with a wink and another smile, and you start to wonder what you have gotten yourself into.

With a grunt you finish, and as you stand up to leave Bob gives you a sharp slap across your ass and quips "See you tomorrow, I'll have your costume all ready".