Top Definition
A sexual act when the guy is giving it, but not getting enough pleasureso he cuts open her abdomen with a small knife and whacks off inside.
guy 1: that sick perv gave allice a cincinatti seasection

guy 2: ewwwww! thats gross!
by chill_bro_27 February 21, 2009
5 Words related to Cincinatti Seasection

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