When you fist someone while that person is taking a shit.
"Dude, this big black dude named Sue gave me the worst mad monkey in jail; I couldn't shit for 4 days."
Top Definition
When the man is about to climax (in doggy style) he pulls out, pulls her hair up, cums all over the girls neck and then rubs her hair in it. The reaction should be the girl with one if not both hands behind her head screaming at the top of her lungs. Resulting in her looking like a monkey.
My buddy gave his ex-g/f a mad monkey as a parting gift.
by Hinto Beans August 05, 2008
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