1.) When someone completely soaks their white t-shirt to the point that it becomes see-through.

2.) A direct result of overactive perspiration in an embarrassing public setting.
Dude 1: Hey bro, that was an intense game of b-ball
Dude 2: Fuckin' right dude, I'm totally rockin' a Sweat T Shirt Contest right now.
Dude1: Fuckin' gross, man!
by vinnyp7676 January 18, 2010
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