buttnut

something you call your little brother regularly and is topped off when accompanied with a noogie.

see above for other examples of the term buttnut

by slightlybonkers March 6, 2008

ButtNut Rebound

Person A ejaculates in person B's anus. Person A gets behind B's butt. Person B then flatulates as hard as they can thus spraying semen all over A's face

"Damn, I just busted real hard in you. I'm in for a real good buttnut rebound!"

by DedSexi June 26, 2008

Buttnut

An insult much like Buttface but much more gruesome and always brings the victim of your insult to a loss for words.

You Buttnut you smell of rotting cheese.

by Corrie July 29, 2005

buttnut

Climax experienced as one finishes fucking another in the ass.

Hey, Devon, did you buttnut that shit last night?

by JosueFender August 8, 2008

planet buttnut

noun: similar but not directly pertaining to a feeling of having one's mouth full of peanut butter in an everyday sort of manner.

I feel like I'm on planet buttnut.

by BEN AND JOSH December 22, 2004

Butt Nuts

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

Buttnutter

When you put it in her but and don’t pull out in time to buy on her back

Hey bro did you smash last night ?
Yeah bro but I had to buttnutter
Damn, bruh

by Wenger January 12, 2018