A sexual act where two people rub their naked buttholes against each other's buttholes for pleasure.
by MexicanSeafood February 16, 2015

Feces secretion associated with patients who have had their anus fused together. This process of the fusion of the anus is commonly referred to as anal fusion. Anal fusion has been experimented with in the realm of alternative energy.
by Jesusbibleman March 6, 2011

by Bobo da fool December 21, 2017

by LaTrifa and TrigNog December 9, 2010

It is the act of not wiping after defecation and leaving the excrement to fester on ones anus therefore hardening and turning into butthole cheese.
"Dude, you should wipe a lot more often!"
"Why?"
"Because your ass cheeks are caked in butthole cheese!"
"Why?"
"Because your ass cheeks are caked in butthole cheese!"
by Birch Guy December 2, 2014

Something you say when you want to sound like a retard. It’s used to describe just about anything. Yell out stinky butthole any time.
by M-dog October 29, 2019
