jacks

Usually used to buy a certain amount of weed worth £5 but has now been morphed to just plainly mean £5 in London Street language (jafaican)

"Oi rob, have you got enough for the cinema?"
"Nah Fam, I only got a jacks, buck (lend) me a nugget (pound)"

by Fiverdotman April 16, 2007

Jack

Also known as Jackass. He is known for his ass behavior. Loves to work at the sweatshops of China. Usually all jacks are adopted. Has a habit of throwing spoons when agitated especially at crying babies. Got out of a relationship with Elmo.

Why are you being such a Jack right now?

by Buttlet123 June 20, 2016

Jack

A piece of shit that thinks he’s all that. He is a septic tank full of crap

Jack: move biches

Everyone else: excuse me septic tank but I wouldn’t be talking all of that shit, oh wait you are shit,and your full of it

by Your mom 321 March 30, 2019

jacks

A derogatory term which people from Cardiff use to describe people from Swansea, in South Wales. Etymology: stems from "Swansea Jack" a dog who assited in the saving of several dozens of persons from various drowning situations by barking loudly from the beach/docks and thus drawing the attention of passers-by who were able to really help.

Cardiff supporter: "Fuck me, I can't believe those soddin' Jacks are back in the Championship!"

Graffitti in toilet of The Woodville pub in Cardiff "Kill all Jacks!"

by Mr Snail April 17, 2008

Jacking it

To show ones abs off in a deliberate way whilst trying to make it look accidental

God look at Jack. He'said Jacking it in front of Rose

by Forshizzlemenizzle January 20, 2017

Jack

Jack is one of the hottest boys you'll ever meet, he's smart and has the best personality, although he might come off as a bad boy, he is so funny and amazing and I'm so lucky to have him in my life.

Friend: wow! Who's that

Me: oh that's jack, I'm so glad to have him in my life

Friend: aw you're so lucky

by Bandsforever October 06, 2015

Jack

A 100% undesireable douchebag that will break your heart. Never trustworthy. Always looking for another girl to cheat on you with. Lies a lot. Criticizes you to no end.

My boyfriend Jack just stomped on my heart.

by mylifesucks123 December 01, 2011