Backfire

When extra gas accumulates in your tail pipe and the heat ignites it causing a small explosion resulting in snaps, crackles, pops, and sometimes flames.

"Dude it's backfiring!
"mY sUpRa BaCkFiReS sO iT mAkEs 800 hOrSePoWeR."

by Gapplebees June 13, 2023

Backfire

Similar to calling shotgun, but for the backseat instead of the front

"Shotgun!"
"Backfire!"

by @Hiphophead March 20, 2024

Backfire

When a man is fucking a girl and busts a nut in her and It shoots back out all over the man

I was fucking my girl then she backfired all over me.

by Fear oh May 20, 2016

backfire

Returning back to the originator of an action with an undesired effect.

Plenty of us overpay on loans to dig out of debt faster—but it can backfire.

by Toa Pohatu May 27, 2017

Hungarian backfire

When your peeing at a urinal and try to fart but shit your pants.

I was in qt trying to take a piss and was almost hit with a Hungarian backfire.

by hi!!!!!!!!:) November 12, 2022

Muffler backfire

When a girl is giving you a blowjob, and while choking on your dick, she accidentally farts.

So my girl was choking on my cock, and had a little muffler backfire.

I think my girl had to shit, because while she was gagging on my cock, she kept hitting with a muffler backfire.

by MURDOCK813 February 24, 2021