Mule Onion

A reference to a woman's backside - specifically a really well-formed one. So called because, as we all know, crossing a mule and an onion results in "an ass that'll bring tears to your eyes".

"Damn, look at the mule onion on that one!"

by Heathen 2.0 April 29, 2008

bum onion

An unfortunate protrusion from the "chocolate starfish" AKA Farmer, Nobby etc. Can be treated with Preparation H, or a similar pharmaceutical product.

"Oooof! These bum onions give me hell when I ride my bicycle": Attributed to J Sheehan 2004

by Dr van Truessen January 27, 2004

Double Onion

The process of having sexual intercourse where both participants are crying. Can be applied as a Triple Onion if a threesome is being partaken and so on. A Single onion is the most common.

"Hey man, heard you got lucky last night! How was it?"
"Turned into a bit of a Double Onion but It was still magical."

by Classic Alfredo December 28, 2016

boofed onion

The smell of urine that has been sitting and becomes rancid over time.

That room smells like boofed onions because Timmy doesn't clean the urine on his bed.

by j76815 March 27, 2019

Emperor's Onion

A stink so bad it makes the paint on the walls peel, like an onion makes your eyes water.

Adam (Gets out of the washroom) - Aw man
Frank - Choke another donkey?
Adam - Nope, dropped me an Emperor's Onion for the next guy..

by Kallerack March 23, 2019

stuffed onion

A stuffed onion is a booty so round and tight that it brings tears to your eyes

I am not fundamentally opposed to junk in the trunk, although my preference is a stuffed onion over an oozing pumpkin.

by Ledaml July 7, 2009

Onion Bowl

That little, round, brown earthenware bowl you keep in the fridge so that, on occasion, you can take it out and plunge your balls in it to cool down.

Man, Greg was so bummed his air con was broken until he remembered he had the onion bowl. That cooled him right now down.

by Mr Flaps January 8, 2017