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1.
Stir Guts.

-verb.

1. The act of engaging in vigorous intercourse, wherein the tip of the penis is imagined to mix either the: (1) internal viscera; or, (2) contents of the stomach of the coital recipient.
E.g. 1: "Dude, she was way hot." 2: "Yeah, I'd stir guts. . . ."
by <::Chipper::> August 17, 2009