This term comes from the movie "What Lays Beneath" in which two lesbians have sex in the bathroom. One of the women bends over the sink while the other fingers her from behind. She inserts both hands such that they are facing each other, palm to palm, and then she begins a clapping motion. Reminiscent of a toy monkey with symbols, the term monkeyclapping was born.

A casual invitation / threat used by an individual that is not afraid of fucking someone up.

Slapping someone with both hands on either side of their face, in a clapping motion.
Inspired by Donkey Kong.

n. An open handed bitch-slap across the face of someone. CAn be used outta hate or playing around.

When you take your hand, spread your fingers out, and slap someone in the face.