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1 definition by Paradox@pawngame.com

 
1.
When you stay in wet clothing (usually swimming trunks) for to long, you're butt begins to itch.
Thus causing you to scratch it profusely, often ending in you looking like a monkey.
Dude, I went swimming and never dried myself off, now I have the worst case of monkey butt ever!
by Paradox@pawngame.com July 22, 2010