Top Definition
When a group of friends arrange a gathering that's guaranteed to be a laugh but one decides at the last minute they ain't coming. This is regarded highly offensive to the other members that turned up.
Adam: "where's ALS at anyway? The train is leaving in a minute, he best hurry otherwise we'll barricade the tracks. We ain't leaving till we're all here"
Scholes: "Haven't you heard?? He's jack cunted on us… AGAIN"
Adam: "Cunt"
ayon kay Ill-eagle ika-24 ng Oktubre, 2013
A "Jack Cunt" is someone who is selfish, unwilling to work and use energy during a task involving more than one person. The person who has been deemed a "Jack Cunt" may also try to use excuses to avoid performing the required task, which usually involves them suddenly disappearing, then reappearing after the task has been completed. Jack Cunts will always think about themselves first..
Nick - Excuse me bro, can you please help me lift this…
Alex - Nah

… Jack Cunt
ayon kay phantomplayerX ika-30 ng Mayo, 2015
Someone who by doing 'jack shit' in a team environment becomes a cunt because the other people in the team have to pull the weight of that person and do extra work.
Joe: "why havent u finished work yet?"
Fred: "coz jason is a jack cunt and im doing what he didnt do."
ayon kay winegrape ika-05 ng Mayo, 2015
The act of being a cunt, and doing everything possible to Jack people off.
1. "Damn, Jack is a cunt!"

2. "Fuck that Fucking Jack-cunt!"
3. You leave the room for a short period of time, and on your return, realise that Jack is in your chair. "Get the fuck out of my chair, Jack You cunt!"
ayon kay Hardcoresucksthepecker ika-07 ng Pebrero, 2010

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