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The peak of sexual excitement during the act of defecation, characterized by strong feelings of pleasure in the anorectal region and by a series of involuntary contractions of the muscles of the genitals, usually accompanied by the ejaculation of semen by the male.
You didn't just coprogasm in that bathroom, did you? Oh, for fuck's sake, you did!
by Ubermensch May 02, 2005
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