KJ 

KJ is a person thats cool and popular all the girls want kj because he has a big penis

That guy is so KJ

KJ by Peenjuicer July 3, 2019

Kj 

A cute couple that will last forever&always

Look at that Kj couple

Kj by Skittle5611 April 23, 2015

KJ 

Kristal Joint PCP

A term for the drug PCP

KJ by k September 15, 2003

kj 

abbv. killjoy / kill joy Australia

A person who wishes to not socialise and have fun, therefore 'killing' the fun, or 'joy' of others

Jane: "Amy you gotta come clubbin..."
Amy: "Nah... I'm tired... I don't want to go"
Jane: "But everyone is going..."
Amy: "Nah..."
Jane: "Oh my god you're such a KJ!!"

kj by Cho Chang May 27, 2004

KJ 

most widley used in the video game world, as kill jack.

also known as a kill steal but you cant yell KS and sound too cool, KJ is the act of killing someone who is already hurt.

KJ by johan ciznero December 19, 2009

kj 

or "koala job"

to suspend yourself from a woman's torso in a 69 position and recieve a blowjob but give nothing in return thus resembling a koala.

eating her out while shes hanging from you is a reverse kj.other variations include k69, and the koala toss

yo son i just got this ill ass kj but it blew my girl's back out!!

kj by hoor3x December 10, 2008

KJ 

The KJ was invented by rapper Kyle Johnson and it is when a male inserts his penis into a females vagina; then takes his hand and inserts in into the vagina. Once the hand is in the vagina he strokes his own dick resulting in the best form of masturbation ever.

Mike: Bro, I'm really getting tired of late nights by myself...do you have any suggestions how to make it exciting again like it was in 5th grade?

Kyle: Yeah man, for sure. Just do the KJ

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Sarah: Hey baby, I'll let you do anything to me. What are you going to do?

R.Kelly: Bitch, I'm going to do the KJ to you big black ass.

KJ by kylepen15 October 8, 2009