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.
by Steve Y October 19, 2005

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.
(ass sliced onions do)
An ass that is so mesmerizing to look at that it gives you an instantaneous chubby.
by weave April 02, 2003

by nitey March 29, 2005

by angeleyes228 January 08, 2012

by Jakethesnake July 13, 2006

by mg04mho August 05, 2011

Guy 1: (sniff sniff) Dude what's that smell?
Guy 2: Oh sorry bro my mom made garlic bread two days ago and this Onion Butt won't leave.
Guy 2: Oh sorry bro my mom made garlic bread two days ago and this Onion Butt won't leave.
by James Hauge February 26, 2009
