Someone acting mean and/or unfair, like a jerk or an asshole.
"My boyfriend is being such a monkey butt lately. He keeps picking fights over nothing!"
by orangesapples July 16, 2008
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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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Having a severe case of monkey butt. Can be caused by chaffing of the butt cheeks, diarrhea, eating too many buffalo wings, hemorrhoids,or anything else that can irritate the rump.
Dude, after drinking a bottle of hot sauce, eating two cans of habaneros, and using 80 grit sandpaper to as t.p., I have a severe case of red hot monkey butt...got any Tucks?
by Jeff Nordberg August 11, 2007
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The act of anal sex, with a partner that when finished throws the inevitable poop at hapless onlookers.
Man, you missed some freaky monkey butt love at the park; I almost got hit!!!!!
by The Sugar Shack October 10, 2011
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When your so desperate that you will fuck anything, including a monkey
Jacob: God damn, I need someone to fuck
Kris: Why not fuck a monkey?
Jacob: what and be a Fuck Monkey Butt? No way...
Kris: I did...
by Jellotin Desert September 3, 2009
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