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The area between the scrotum and and ass hole. "Cossoff" it wasn't there, your insides would fall out. See also, Taint
Just took an enourmous dump and took a splash back to the cossoff
by slaker November 08, 2011
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Sep 8 Word of the Day
A casual invitation / threat used by an individual that is not afraid of fucking someone up.
PAUL: I'm going to beat your ass.

JACK: Fuck around and find out, fool!
by NX STARCHILD October 16, 2020
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