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"
Por Ill-eagle 24 de octubre de 2013
2 more definitions
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."
Por winegrape 05 de mayo de 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!"
Por Hardcoresucksthepecker 07 de febrero de 2010

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