Rage-jack 

when one gets stressed out and is in need of releasing stress by jacking off (also known as masturbating).

hahaha, you should rage-jack!

Rage-jack by Montelonti April 16, 2011

post-jack (post ejaculation frustration) 

is when a man after ejaculation gets into a horrible mood. Very common with middle aged men.

I think my boyfriend has post-jack (post ejaculation frustration) in the morning.

post-jack (post ejaculation frustration) by sachimiprimi June 14, 2011

Cereal Jack 

After you jack off, you eat your favorite cereal

Jordan: Dude, I'm bored and hungry :(
Ben: Let's just cereal jack :)

Cereal Jack by DSO Nova00 July 27, 2011

Nasty Jack 

A slanderous hate word used against British people on the hard streets of chesterfield, MO

Mas: Those nasty jacks are really startin to get on my nerves
Retep: the fat 1 with the fro is the worst
Mas: no doubt, one that i can stand is steven
Retep: hes cool

Nasty Jack by mas yelad August 19, 2011

Captain Jack's Crew 

A dude and a chick that have been fucked by the same guy.

Girl: "You see that guy with the snake tattoo? I totally shagged him last night!"

Guy:"Really?!? He rode me so hard last week I couldn't stand up for three days!!"

Girl: " I guess we are both apart of Captain Jack's Crew."

Captain Jack's Crew by death the fox September 2, 2011

co-jack 

1. (verb): When someone attempts to steal the limelight or credit for something, under the pretense of "helping", but really makes himself just look bad in the process.

2. (noun/verb): Inadvertent hijack

It is often meant to help, but through some devious alterior motive or actual impact over intent, it ruins the moment. People who do this are usually associated with santorum.

I

Yo, did you see what Kanye did at the Grammy's? Yeah, he totally co-jacked Taylor's moment.

In an effort to help Frank's presentation, Lizzie co-jacked him, taking all the credit when all she wanted to do was make sure the boss knew she helped too.

co-jack by lepenseur73 October 12, 2011

That Jack 

That feeling you get riiight when you're peaking the top of the "addy mountain". Not to be confused with "talk to the conductor" or "the train". This is the moment after you've taken you're so called ADD medicine that shit really starts to get done. Normally lasting (in a higher metabolism individual) no longer than 1-2 hours, give or take. At "the peak" one will generally find an insatiable need for nicotine of some sort and possible "jawing" may ensue.

Yo dawg, I just ripped about 40mg of addy and I'm on that jaaaaaaaack (That Jack).

That Jack by nibblegnome October 20, 2011