Top definition
GSP Abs are abdominals that did not form correctly and do not look appealing nor good in any way or fashion.
Guy 1: Dude, George Gt-Pierre is the worst fighter he just lays on people for 5 rounds and gets the win, on top of it hes got GSP ABS!

Guy 2: Meh your right and even get me started on how bad Shogun is at fighting...
by ThatGuyYOO July 16, 2010
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