Jack

A Ginger human being that possesses pro skills, he has a big penis and is well known for his Ninja reflexes.

Wow that guy is so Jack
Pro skills, no thats just Jack

by The Wimping Weasel April 10, 2011

Jack

An awesome basketball player. One of the nicest people you will ever meet. He isn't mean to anyone. He loves to meet new people but can be a little shy. He attends MBA and is very very smart. He is also very nice looking, cute, and has sweet hair. I love Jack more than anyone in the world!

Jack's secret best friend wants to hang out with a Jack

by weeeeeuuuiohn November 26, 2011

Jack

A complete twat.
Only applies to British jacks though.

See that Jack over there? What a Twat.

by 5789 December 11, 2017

Jack

The act of chilling, especially on a Sunday with a hangover.

I hit it way too hard last night, I need to jack on the sofa.

by smash101 October 20, 2013

jack

1. To masturbate
2. Alternative word for Nothing
3. On Your Own (An abbreviated form of "Jack Jones")

1. "Come on, who doesn't feel the urge to Jack one off when you see her on the telly?"
2. "I've done Jack all day"
3. "I'm on my Jack at the moment"

by Wo Wogan September 9, 2006

Jack

An awesome dude. Always makes the funniest flipnotes. He is very nice and understanding. After getting to know him, he seems like a brother; a crazy brother, but a brother nonetheless. Also, he kicks @$$ at Smash bros. Brawl and Modern Warfare! His awesomeness level is OVER 9000!

Jack: Hey, check this out, I just finished the funniest flipnote.
Victoria: Cool, lemme see...
*after flipnote*
Victoria: LOL that was great! You and Aaron give us Aspies a good name!

by the-chick-with-the-notebook August 1, 2011

jacks

street slang in NYC for bags of crack

swallow those jacks my nukka, po-9 is rollin up!

by hustlenomics June 21, 2006