The Angry Gorilla is when a man shaves his pubic hairs and saves them in a bag next to his bed. the next time he has a woman over, after sex when he ejaculates on her chest, he then proceeds to take the saved pubic hairs and throw them at her chest. She then trys to pull them off looking similar to a gorilla pounding on his chest.
When a male ejaculates on a womans chest and throws his saved pubic hair on her chest. She them becomes angry and trys to pull the hairs off. Similar to a gorilla pounding on his chest. This is called The Angry Gorilla