Monkey Butt 

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!

Monkey Butt by [e-mail] August 3, 2010

monkey butt 

The soreness in the rectal area after participating in such activities as anal sex.

Hey girlfriend, I'm got a bad case of monkey butt after my boyfriend slammed it up my ass all night long.

monkey butt by TFWI June 11, 2018

monkey butt 

Cute, affectionate name for a member of the opposite sex.
Used as a greeting

What's up Monkey butt!

monkey butt by rhinorider November 3, 2006

Butt Chug Monkey

A mythical creature which is a cross between a primate and a rageaholic. Consumes alcohol and bananas through its anus.

Do not feed the Butt Chug Monkey

Butt Chug Monkey by XMC7991 September 23, 2016

monkey butt 

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".

monkey butt by LisaD143 August 28, 2005

Monkey Butt 

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.

Monkey Butt by DrooDroo April 6, 2011

monkey butt 

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.

monkey butt by AaronMF October 3, 2005