J-Bro 

A guy with a disproportionally large ass. More commonly known as runners butt.

That dudes ass looks way out of proportion compared to the rest of his body. Thats what I call a J-Bro. Dayumn!

J-Bro by Redlantrn July 8, 2009

j.r 

A dumb ass stupid bitch that's a fucking dumbass mexican

j.r has a small dick and no friends

j.r by Jake4744 January 26, 2019

J-Rock 

Stands for "Jaw Rock". This is when you hit someone's jaw so hard, you rock it.

Girl, I'm about to J-Rock Jessica over there because she slept with my man.

J-Rock by Girl146 November 7, 2010

j's 

derived from "jubblies" also known as boobies or titties

Tim was forced by Regan beyond his will to caress her j's

j's by timmy December 10, 2002

J Bro 

Super awesome computer nerd who loves riding his bike on Thursdays and has freakishly long legs.

See that J Bro over there on his bike! Man, he sure has some long fucking legs!

J Bro by Cali Halcy March 22, 2009

J.O.B. 

1. v.- kissing your boyfriend while he's taking a poop and your bestie looks on.
2. n.- when you leave for work and your bf is on the crapper and you want to smooch him goodbye.

"Honey! Where are you?"

"I'm on the shitter!"

"I'm leaving for work! Gimme a J.O.B.! Before you leave light a match! Love you!"

J.O.B. by The_Beast_from_UD May 6, 2009

J-T

one who resembles a hairy ball sack, but is actually a big vagina

Dude 1: did u see J-T walk in?

Dude 2: no, but i smelled him.

J-T by COD4LIFE March 18, 2009