dirty shotgun 

When you are havin sex with a bitch and your about to nut she sticks her fingers in your ass while beating you off shooting a huge wad!

I was about to get off when the bitch gave me a dirty shotgun!

dirty shotgun by B-Dub 15 November 6, 2006

Dirty shotgun 

Put a nug in your asshole.

Someone lights the nug, as you squeeze-in to suck the weed smoke into your bunghole.
Then the other person proceeds to put their mouth on your ass while you squeeze out(fart) the smoke into their mouth as they inhale.

“Hey, you two girls should totally dirty shotgun eachother, it’d be super hot!”
“One time I tried to dirty shotgun my bf, but he kind of sharted during, so I never did it again.”

Dirty shotgun by Lexokream December 25, 2020