know jack

Australian slang - means to understand, to know.

he doesn't know jack about rugby - he knows nothing about rugby

by An.kim September 25, 2014

Jack Avery

Jack Avery is part of pop band Why Don't We. He is 1/5 out of these amazing people. Jack has noodles for hair. He has 3 sisters and is being shipped with Zach Herron(Jachary) ❤❤

Ooh Jack Avery's voice gets me everytime in Big Plans

by Just another limelight 😁❤ February 17, 2019

bag jacking

the act of stealing Halloween candy from children while they are trick-or-treating.

Origin: SNL Weekend update Oct. 15, 2011. Rap star Drake and SNL member Jay Pharoah pose as "Teens Dressed as Werewolves" and do a rap song about 'bag jacking'

Me and my friends tried to go bag jacking this Halloween, but all of the kids went out with their parents.

by Yuehan85 October 16, 2011

jack jelly

(1)Any substance used as lubrication for male masturbation. (2)Jack Jelly: A specific masturbation product for men in the Gun Oil line by Empowered Products, Inc.

My aunts hand lotion made lousy jack jelly.

by lanstopher March 6, 2009

Jack-Smack

An open handed, back-hand slap to the temple. Not intended to knock someone out, but instead, to make someone appreciate your point of view in a forceful manner so they eventually agree with you. This is considered a more intimidating and more painful form of "Point Making" as opposed to the more traditional and less painful open hand cheek slap.

Jeff: Hey Greg, Jimmy owes me some money and I asked him to pay me and he laughed.

Greg: He laughed?

Jeff: Yes, he laughed!

Greg: You need to Jack-Smack him and let him know you are serious without knocking him out.

by Norge August 11, 2010

ash jacked

Fucked up beyond recognition; gassed; full tank bitch!

That bitch so high she ash jacked.

by OZlificent June 18, 2020

Jack Greenland

Jack Greenland is a very sexy and hot man with golden locks of hair and a jawline so defined you can see it from miles away. He is also really cute and is overflowing with charisma.

"Is that Jack Greenland?"
"What? That hot sexy man beast who is also incredibly handsome and charming? Of course."

by Not Jack Greenland February 10, 2021