A alternative rock band previously stationed in Canada. Now better known as Finger Eleven.
Person 1: I found an old album by some group called the "Rainbow Butt Monkeys". It's pretty good.
Person 2: Sounds stupid. You should start listening to Finger Eleven instead.
by iamdabomb182 September 28, 2008
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An African American man parading around in chaps at a gay pride parade

Hey look it's an rainbow butt monkey
by Ladies Man 627 November 22, 2018
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