What is I.s.m.?
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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!"
See
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The Cuban guy in your fourth block calss who's testicals show through his wranglers.... and boy are they HUGE.
Hey man we need a a..