Onionbutt 

A butt so amazing it brings tears to one's eyes.

Jim: Hey Scoot, you see that hostess?
Scooter: Damn, she's fine and check out that Onionbutt!

Onionbutt by Nefmaster July 20, 2011

Unionbutt 

An ass so good it makes you cry.

Why are you crying?
Look over there.
Oh sweet Jesus, an unionbutt.

Unionbutt by Prins-e30 March 14, 2014

ONION BUTT 

an ass so beautiful, it makes you cry.
(ass sliced onions do)
An ass that is so mesmerizing to look at that it gives you an instantaneous chubby.

Check out the onion butt on that slut!

ONION BUTT by weave April 2, 2003

Onion-Butt 

An Onion-Butt is ther perfect ass on a woman or man. The word Onion-Butt has said to make the grown man cry because it is so beautiful.

Damn, that girl got an Onion-Butt!!!

Onion-Butt by Steve Y October 19, 2005

onionbooty 

An ass that is so big it makes you cry like an onion

Dam that bitch go an Onionbooty my nig

onionbooty by Stefan O'Connor December 19, 2005

onion butt 

So beautiful it makes a nigga wanna cry.

"wow, thats an onion ass, im tearin up baby"

onion butt by nitey March 29, 2005

onion butt 

Someone who has an ass so fine it makes you want to cry.

"I like girls with big tits and an onion butt!"

onion butt by angeleyes228 January 8, 2012