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a prolapsed arse, resembling that of a baboons arse or any other of those wonderful red arsed primates we descend from.
After removing the bulbous 12" butt plug she had a very impressive case of monkey butt.
by AaronMF October 03, 2005
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16
A man that is developing a bald spot on the back of his head resembling a baboon’s or chimpanzee’s ass. This phrase works best if the person combs his hair over this balding area and thinks nobody notices he trying to hide it!
Check out the "monkey butt" on that guy or "nice monkey butt".
by LisaD143 August 02, 2005
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17
A sexy monkey with a hott butt! with getto butties!
Dang! that monkeys got it going on!Expecially that monkey's butt!
by brittany November 21, 2003
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18
Teenage girls gather up/bunch up thier shirts in the back and secure the shirt's ponytail with a rubber band or the like.
When we were at the mall we passed a group of girls all sporting monkey butts.
by MichiganNorth Country November 26, 2008
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19
The butt of a monkey.

A word that ascribes the characteristics of the butt of a monkey to a person.

What you tell someone when they term 'whanker' just doesn't seem to apply.
Dude, you whanker!!! Wait, that ain't right, you're not a whanker at all... You're a MONKEY BUTT whanker!!!
by General Cluck-Cluck June 08, 2003
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20
Term used by a girls boyfriend whom usually loves her dearly to describe her / pet name when he is being playful.
Zygmont called his girlfriend a monkey butt when they were joking outside the classroom
by obbie connobie February 15, 2007
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21
The geasy spulge left in your ass after shitting, if not wiped properly. It can sometimes occur even after a thorough wiping because occasionally your rectum may seep. Warm and humid weather may also intensify this harsh reality.
After taking a growler, I realized i had a bad case of monkey butt on the par three 5th. There was no outhouse around!
by pis2114 May 27, 2006
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