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The act of eating your own cum
Bob: Dude, I totally overshot jacking off and got my load in my mouth

Richie: You totally performed mannibalism
by PatchworkDroo January 18, 2013
Mannibalism - The act or continued act of devouring a man's soul due to bitter vengeance towards ex-boyfriends and/or distant fathers.
Be careful around Traci, she is a man-eater.

She's been practicing Mannibalism ever since Jerry cheated on her last summer.
by Davis Adams III January 23, 2012