Butt sand 

The sand and dirt particles you find in a couch or chair when you lift the cushion.

Oh my, there is a lot of butt sand in daddy's chair.

Butt sand by Crey Tosby April 12, 2016

Butt Snugging 

Non-sexual snuggling between two men. Both men strip naked. The snugee gently spreads his cheeks and the snugger places his johnson in between them, then spooning and snuggling commences. This technique can be used to stay warm in survival situations.

Andrew and I were lost in the woods overnight. The only way to avoid freezing to death was butt snugging.

Butt Snugging by fkndskvjsfnvkne September 19, 2016

butt yawn 

The first fart or “sphincter stretch” of the morning. While you sleep, gas builds up in your lower intestine and must be expelled when you wake. The "butt yawn" usually takes place during the morning urination or when you first roll out of bed. This fart typically does not smell badly, however it can be very boisterous. Caution should be taken if others are sleeping nearby.

My wife was not happy at all when I woke her up with an extremely loud "butt yawn" this morning.

butt yawn by Nacho Burris November 16, 2016

Butt rail 

When a person inserts a tube full of cocain into his or her buddy’s rectum and blows.

Bro, you think I can butt rail this whole 8 ball?

Butt rail by Big money J March 5, 2018

Butt-Yubi

Like a butt dial but in a chatroom with a lot of people, where someone types a lot of random characters with a device designed to do two-factor auth.

User1: jhfjccgnctdujnkbehbicfcgbibgbdidfshejrknnunf
User2: Motherfucker just butt-yubied us again.

Butt-Yubi by ff9900.canary November 5, 2018

butt fever 

A bout of diarrhea and vomiting.

I suffered from the butt fever last week.

butt fever by Word Madman March 28, 2019

Butt flame 

To have an obsession with another man's ass. To the point where you just want to fuck him so bad you can resist!

Lance Viner is my butt flame. Every time I see his face I want to fuck him so bad. I want to bend him over the arm of the couch and just plow it in him. He truly is my butt flame!

Butt flame by Turdburgler2019 February 3, 2020