What is Brown Rainbow?
1.
taking a dump two feet behind someone's bedroom door then closing it behind you.When the chump opens the door all the way he smears the turd into the carpet in a lovely rainbow design.
they'll be scrubbing that rug for a week before they erase the brown rainbow I left them
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2.
A term used to describe the effect on a man's penis when having
My friend was fucking Misty from behind, and after he pulled out he noticed he had brown rainbow. Misty is a dirty ho.
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