Definitions by Tight-ass

I.S.M. 

I.S.M. is short for Italian Supermodel. It often refers to a gay guy that is very photogenic and dresses really nice.

"Dude, did you just see that I.S.M.? He was wearing a fucking scarf!"

"I swear, I.S.M. is being such a camera whore!"

I.S.M. by Tight-ass January 1, 2009