backfin 

The act of smelling an article of women's clothing that has been previously sat on with or without sweat.

Ian: Damn… I would love to rip nose nachos off Trinity’s backfin.

backfin by FranciscoTheHorny September 20, 2023

backfire drunk 

When you try to get your girl drunk but it backfires and she pukes all night and you can’t get a piece.

I only want a couple drinks. I don’t want to get backfire drunk.

backfire drunk by Phoenix420 January 28, 2022

Backing your fist 

(Vulgar) Jamaican slang
Refers to the act of pulling the penis back and forth with the hand in the shape of a fist, usually till ejaculation occurs.

To masturbate or jerk off

Everyday, a big man like you just stays at your yard, backing your fist. Waste man style that, dawg!

Backing your fist by Tropical Rythms August 2, 2020

mans backing

to be someone elses bodygaurd, to stick up for them if someone else starts on them.

bob: come then bruv i'll bang
dave: nah you won't boi i'm his mans backing

mans backing by howard666 April 7, 2011

Backfished 

When you see a shorty from behind and you think she’s valid but when she turns around she look like sherk.

Jaetel: Damnnn Cam look at the shorty over there

Cam: Damnnn shorty’s valid

*shorty turns around and smiles at Jaetel*

Jaetel: UGHHH MY EYES

Cam: Ewww shorty looks like Sherk

Jaetel: Damn bro we just got backfished

Backfished by Jaetel the G September 17, 2018

Backfire 

to bring a result opposite to that which was planned or expected.

They never learn even after all the games they play continue to backfire on them.

Backfire by Goddess12* December 22, 2013

brown backing 

After any group or groups of persons, gay or straight, engage in anal intercourse, the man who's penis has been inside the other person's rectum, uses his now fecal covered penis to draw a picture, using the person's fecal matter, on his or her back. Sort of like a poopy game of Pictionary. The draw-ee, as it were, tries to guess what the draw-er is drawing.

"So check this out Bro, Josh and I were Brown Backing last night and he drew the logo for the Chiefs on my back! I totally got it before he was even finished! Brownbacking Kansas Governor Sam Brownback brown brown backing brownback

brown backing by Momma Rugburn February 11, 2015