a nut that sometimes comes out of your butt. perhaps after a raging party, or something.
Ashaya: Awh man, last night was awesome!

Skylar: I Know right? There's one disadvantage to partying too hard.

Ashaya: Oh yeah? Whats the disadvantage?

Skylar: Butt-Nuts. =\ Came out this morning, what the hell did we even do last night?

Ashaya: Not sure, musta been good though.
by causeeveryothernameistaken April 24, 2010
Get the Butt-Nut mug.
When someone likes your bootay and suddenly you shit on their face
Kasandra was licking me asshole when suddenly she hit the perfect spot and I pooed in her mouth it was the best butt nut I’ve ever done
by Haylson meateater August 7, 2018
Get the Butt nut mug.
1. an abnormality of a hermaphodite, that has a testicle growing out of their anus.
Hey, Look at that guy in the thong! Is that a bad case of hemmroides or what?
No, It just has a butt-nut.
by uglyman February 16, 2005
Get the butt-nut mug.
When a man inserts his penis so far into a woman’s anal canal and all there is to see is the woman’s butt and mans nuts.
Me and my girlfriend made Butt Nuts last night while having sex.
by Game Changer C June 23, 2022
Get the Butt Nuts mug.
its where you have your testicles surgically removed (by a doctor) and placed in to your ass cheeks to supply padding and comfort when I sit or lay
"I went to the doctors and had Butt Nuts now its less painful when I fall on my ass and more comfort when I sit down"
by Sargent Gamer May 30, 2016
Get the Butt Nuts mug.
A Butt Nut is when you ejaculate into a lady's ass as she farts and the nut blasts out.
My chick and I did a butt nut.
by C.C.D. November 21, 2020
Get the Butt Nut mug.