Butt Sex Sunday 

When you decide to blow off all responsibilities on any given sunday including work or going home if you've been out of town partying all weekend. Very popular term used in the rugby community. Should always involve hanging out with members of the opposite sex and is even better when you actually have butt sex with one of them.

Skip: Well, should we head back to the twin cities, I have to work later.

Joe: Screw that, we're in Chi-town, it's Butt Sex Sunday, all day long.

Butt Sex Sunday by bretty b December 13, 2009

RANDOM BUTT SEX

the act of randomly having butt sex.

or the act of shouting RANDOM BUTT SEX

most commonly done at slumber parties

Person: hey guys, lets get some pizza
Random Person: RANDOM BUTT SEX!

RANDOM BUTT SEX by MOHAMMED's BOOTY MEAT December 22, 2010

Buttsexist 

1. More fitting term for homophobe, brings to mind both the hatred of racism and sexism and the uneasiness of hearing about butt sex.

Person 1: Of course gays don't deserve the same rights as straights.

Person 2: Dude you're such a buttsexist.

Buttsexist by An Alchohalic April 3, 2009

Vinegar butt sex 

The act of pouring vinegar in a bunghole amd pounding it.

I got a bottle of vinegar and poured it in her bunghole and started pounding it like a fresh field in India. We had hot vinegar butt sex.

Vinegar butt sex by Vinegar Butt Sex June 2, 2017

butt sex in the raw 

bareback, back to front, unrelenting anal pounding

maaaahh duuude i got all up in that butt sex in the raw and it was like BOOM

butt sex in the raw by velociRAPEtor October 2, 2010

butt sex 

But sex (noun) a activity mostly done by two male partners but also done by man and woman as well. Butt sex is the best way to get hiv.

John and Lee only have butt sex on saturdays.

butt sex by jkbchick May 25, 2015

Butt Sex Train

See BST.

"Grant and Forrest are the masters of the Butt Sex Train, known casually as BST"

Butt Sex Train by Boots April 25, 2004