A Jacko 

Doing a Jacko is that one friend who is always the last in a group at a bar/club in a round but has to leave before buying a round of drinks in return. He could be with a group of 4 to 5 people and everyone has bought a drink, but when it's his/her turn they either sneak out or make up some excuse for having to leave.

"Whose round is it lads"

"It's Dave's round, he said he was going to the toilet but I think he's pulled a jacko"

A Jacko by Judgemental Prick June 1, 2015

A jack dane 

When you projectile poo all over the body of somebody's mum at their funeral

Person 1: did you hear what happend last week?
Person 2: no what happend
Person 1:that lad over there did a jack dane at Henry's mums funeral lmao

A jack dane by Gay lord69 November 27, 2020

Are you a jackoff? 

A useful, go-to question for the ages, used in situations when someone’s behavior verges on intolerable.

In my opinion my husband over-utilizes the question, “Are you a jackoff?” when I am attempting to regale him with my UD compositions.

Are you a jackoff? by Dr Bunnygirl July 2, 2020

doing a jack

the act of wanking on skype to his female and male friends

the act of living in a freezer

boy= "im gonna have a wank"
girl= "please dont do a jack"

boy= "how far have you gone with jack ?"
girlfriend= "practically no where, hes doing a jack again"

doing a jack by izamberie September 24, 2015

pulled a jack warner

To pull a Jack Warner is to pull out of something at the last minute.

You: So what time are we meeting him?
Me: Ahh we're not anymore he pulled a Jack Warner 10 minutes ago.

pulled a jack warner by Spaghetti1245 July 17, 2009

hit a jack 

to Smoke a ciggarette

Yo, you wanna go hit a jack?

hit a jack by David Russell September 12, 2005

Pulling a Jack Bauer 

Dying and coming back to life, or pretending to die and coming back to life as Jack Bauer from 24 has done twice

-So James have you read Romeo and Juliet yet?
- Yeah Juliet pulls a Jack Bauer

Boy- That guy was drowning!
Girl- No dont worry, he was just pulling a Jack Bauer

Pulling a Jack Bauer by Ana M. November 7, 2007