When you sweat prefusely in the butt area or you take a painful shit(crap) and It begins to hurt when you walk.
I sweat so much at practice my ass hurts and now i have "monkey butt"
by Blue pickle August 23, 2007
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Term of endearment: Can be used to describe a significant other or a loved one in a silly way.
I love you Monkey Butt!!
by I love erin :) March 3, 2009
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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
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A term used to describe a man or woman who can grow hair fully, and to a substantial length on the buttocks.
Before the hair transplant, Roy was a Monkey Butt.
by DrooDroo March 21, 2011
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When your ass gets all sweaty and chaffed from recieving too much anal sex.
Best when a banana is used and the act is performed in your brand new kitchen.
Jeff Misner has the nastiest monkey butt i've ever seen.
by Jennie August 2, 2004
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Invented very recently, this word is used as an exclamation of various sorts, but noticeably an exclamation of overwhelming suprise.
Chris Bradford: How much is rent on that apartment?

Dude: $1500 dollars.

Chris Bradford: SWEET MONKEY BUTT FUCKER that is expensive
by mista_g October 28, 2005
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an actual thing, a powder that prevents swampass, balls, similar to gold bond
by Roofuhlyn January 30, 2010
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