Top definition
Any hypothetical, highly imaginative, very improbable, and likely physically impossible sexual act or position involving fecal matter defined on urban dictionary by young men as a result of too much free time, overindulging in porn, and a scarcity of real time social intercourse.
"I guess some are kind of funny, but most of the sexpoo is just dumb and silly."
by funkiemunkee February 04, 2010
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