Top Definition
The woman sticks several or more food-coloring full water balloons up her anus. The man proceeds to fuck her in the ass, thus breaking the water balloons in the woman's anus. At the same time as the color burst from her anus begins, the woman defecates on the man's junk. They cease the fucking and proceed to eat the rainbowy shit, only to throw it back up. The left over green rainbow left on the floor and body is called thusly, a Green Rainbow.
Fuck man, last night I walked into my mate's room and there was a fucking Green Rainbow. Shit smelled terrible but was strangely picturesque.
by Grumpy Sam October 20, 2008
8 Words related to Green Rainbow

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