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When someone ejaculates in a woman's asshole (or man's asshole if you're into that kind of stuff.) Then he or she farts. And most of the cum in the asshole sprays or seeps out. This process often turns the white semen a stanky brownish color; quite like a hobo.
Aw man, what stinks?

Oh, that's just some left over hobo lunch.

Ok, that's whats so stanky.
by snitches-aint-zhit December 04, 2012