It's when your nose is really stuffy and you simultaneously blow air really hard through each nostril, which might be enough to blast snot from both of them at the same time, projecting a scattered tapestry of snot onto whatever you happened to be aiming you face at. It can also be done unintentionally, such as when you sneeze really hard and manage to cover your mouth but it gets diverted to your nose, spraying particles every which way. Regardless it's pretty disgusting so make sure you use a damn tissue next time or if you don't have one sneeze into your sleeve.
"Oh well that's gross. That guy just fired his double barrel SNOTgun at his desk and now there's boogers everywhere."
"I was sitting in class and this guy behind me blasted the back of my head with a double barrel SNOTgun. Guess that explains why my nose is feeling a little stuffy and I feel a cold coming on. ACHOO!"
"I was sitting in class and this guy behind me blasted the back of my head with a double barrel SNOTgun. Guess that explains why my nose is feeling a little stuffy and I feel a cold coming on. ACHOO!"
by Suckmytoes_77 September 26, 2023

by Mario and Luigi rule34 August 17, 2023

you blow hit a smoke (of your choice) in the girls vagina. Then suck it back out and you blow it in her mouth. if done correctly, she should be able to blow out a smoke ring.
hey there, lady I know everyone probably asked you for a shotgun, but have you ever had a double barrel shotgun?
by saynomore96 August 12, 2025

by Mario and Luigi rule34 August 17, 2023

The move used to counter a Mavin Street Masturbation Manoeuvre. The act involves getting inebriated and then sitting on the toilet, releasing liquid excrement from the anus while vomiting into the sink.
Bro 1: ‘I feel very I’ll’
Bro 2: ‘ he’s definitely gonna do a Mavin Street Double Barrel Discharge’
Bro 3: ‘wow the rats are going to wish they didn’t live in our sewer!’
Bro 2: ‘ he’s definitely gonna do a Mavin Street Double Barrel Discharge’
Bro 3: ‘wow the rats are going to wish they didn’t live in our sewer!’
by JimmyTomlinson2 December 7, 2024

Guy 1: Hey fuckface
Guy 2: Ya wanna fight?
Guy 1: Lemme get my friend
Guy 3: So whats this suprise?
Guy 2: Oh you double barreled asshole
Guy 2: Ya wanna fight?
Guy 1: Lemme get my friend
Guy 3: So whats this suprise?
Guy 2: Oh you double barreled asshole
by Turkey_Slapper69420 February 17, 2022

Eric just got a double barrel shotgun from Megan he said it was such a great blow job, he shit himself when he blew his load!
by Dicklarious Darren October 18, 2013
