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.

when you're hungover as shit after a spending a night drunk as a skunk

When your girl tries to put your banana shaped cock in your mouth but it makes the Mad Monkey ANGERRYYY!! So then you spank her in the bojangles and tear out her pube hair, and use superglue to put it all over your body, officially making you the maddest of monkeys,

When you fist someone while that person is taking a shit.