Sack Jack 

Sexual act performed by a male with a larger/looser than average scrotum who then wraps said scrotum around his buddy's shaft and proceeds to jerk him off to climax with his sack.

Hey Kyle, what did you do last night? Well Trent, I exited a hot shower and my scrotum felt larger then normal; so I proceeded to Sack Jack Mr.Park till he ejaculated.

Sack Jack by WPGCSU February 28, 2019

Cocktus Jack 

when you take the travis scott meal toy from McDonalds and cover it in cactus spikes then shove it up your ass

"hey bro you get the travis scott meal?"
"yeah i got it with a side of cocktus jack"
"sweet"

Cocktus Jack by CocktusJack September 21, 2020

Not worth jack shit 

Not worth the trouble or the value

That car's not worth jack shit

Not worth jack shit by iamamanufan January 12, 2011

Sherpa Jack 

To fail so badly that when all the passing grades were removed from the curve, the Sherpa Jack grade will still fail.

Guy 1: Oh man, physics was so hard I think I Sherpa Jacked it.
Guy 2: Yep, you're stupid.

Sherpa Jack by D42HIKE! June 13, 2008

Samurai Jack 

A rather decent show by Genndy Tartakovsky, which is played on Cartoon Network. It's about a samurai called Jack (called so by a group of ghetto-speaking thugs in the second episode), and how he is ripped into the future where the almighty being Aku (japanese literal meaning for "evil") rules all, including various locations in the heavens.

Yes, it is a type of rip on anime, and there was even a character on an episode that looked like Jigen from Lupin III. But with its cinematic soundtrack & other interesting things, you really could do worse. In fact, the purpose of this show is NOT to rip on anime! It's called APPRECIATION OF CULTURES! Unfortunately, people just don't get it. -_-'

"Aku is funny. I thought the funniest episode of the show was when he was trying to brainwash the children into disliking Jack, by reading them a bunch of fractured fairytales."
-me

Samurai Jack by Dave March 28, 2004

You Don't Know Jack 

Colloquial Language for: You know nothing.

A: Hey, dude! 34 that on Photoshop.
B: 34?
A: Yeah, make that steamy.
B: Steamy?
A: Dude, you don't know jack about imaging, don't you?

You Don't Know Jack by Deuces High March 26, 2011

fact Jack 

A statement that is true in the absolute sense, and will not even tolerate a discussion.

Origin: the cinematic masterpiece Stripes.

General: Are you telling me that you men finished your training on your own?

Soldier: That's a fact Jack!

Additional Soldiers: That's a fact Jack!

fact Jack by frisco3 April 22, 2008