A general black person. Since they're usually exorbitantly plain, to say the best, they're likely to confused with monkeys. (Same natural skincolor, wrinkled hands, matching mimicry and in rutting season, similar smell).
" ... You even talk white. That's not bad - for a monkey (referring to black people)."
-Uncle Ruckus, The Boondocks.
A word used When ones train of thought is lost or one stops him self from saying something vulgar. It can be and often is replaced with one of three other animals.
These are
1. Cow
2. Chickens <= yes it must be plural
3. Turtles
Bill: So last night stacy and i were about to get it on and...
Bob: No way she is so hot!
(long silence)
Bob: So...You were saying...
Bill: Um...MONKEY