Chimp Out refers to the action of someone or somthing(chimpanzee) going completly ape shit on anyone who tries to calm it down. The person or thing completly looses his or her cool for an extended period of time. In extreme cases resulting in police "busting a cap in its ass".
Lady 1: " Oh God shoot the chimp shoot it (sobs)."
Exclamation indicating someone has recieved what they deserved. Also used as a put down when something bad happens to someone.
Chop out on Randy "Duke" Cunningham, Congressman (R). He was sentenced to 8 years in prison for taking more than 2 million dollars in bribes from defense contractors.
A White Chimp out is when a white person removes his/her facade as a civilized human being and releases his/her Inner White Chimp; as in to start acting violent and out of control. Basically to start TNB'ing; randomly Jumping/beating someone, murder, rape...you know, the typical.
I was trying to reason with that client, but all of a sudden he chimp out on me and started screeching, became violent, and started beating random people around. We had to call the police to control him.