Jack Duke 

Masturbating while taking a dump, especially if done out of neccessity due to lack of a more appropriate venue.

This camping trip's been a bear, I've had no time to myself. Things got so bad I had to take a Jack Duke in my friend's RV.

Jack Duke by snakepit7 February 10, 2005

Jack Parow 

South African Afrikaans rapper. Famous singles include "Jy dink jys cooler as ekke" (You think you're cooler than me), Dans Dans Dans with Francois van Coke and Die Vraagstuf with Die Heuwels Fantasties.

Famous for his zef style and straightforward lyrics.

Did you see Jack Parow's new single, it was awesome

Jack Parow by Ms.Laliness June 30, 2010

Jack Hughes 

An extremely hot hockey player who can get it

Jack hughes is sexy PERIOD!!

Jack Hughes by emss March 28, 2020

ninja jack 

The ninja jack. The act of jacking off silently (quickly in most cases) and without those around you knowing that you had even done so.

Usually refers to jacking off while someone is talking on the phone (I.e. a girlfriend calls and you rub one out while she talks about something random).

Girl: "Hey, so anyways my day blah blah blah"
Guy: "yup, sounds good"
Guy::touching himself/finishes::
Girl: "So- what do you think?"
Guy: "Sounds like a plan. We meet at your parents house for dinner tomorrow night"

Ninja jack successful.

Girl: "What's wrong- you sound winded"

Almost.

ninja jack by The Noob Tuber April 2, 2010

Flat Jack 

A Flat Jack is a square of breaded processed chicken that can be heated up in a toaster instead of an oven, making it a quick and convenient lunch option or snack food.
It's like a chicken nugget that is the size and shape of a Pop-Tart.

Hey man, I'm hungry, but I dont want to heat up the oven or turn on the stove for something small. What do I do?

Oh, no problem. Stick a couple Flat Jacks in the toaster and you're good to go dude.

Thanks brah

Flat Jack by Anon7301 May 7, 2011

buttery jack 

When ones partner gets two sticks of butter and inserts one into the anus and uses the second stick of butter as lubricant for a handjob.

"Dude, that chick, Jessica, gave me a buttery jack yesterday!"

buttery jack by BerserkBun February 24, 2015

The Jack Gay Song 

The jack song of a retarded gay ass dumbo named Jackson payne

Girl 1: who's that gay ass man
Girl 2: that is jack want me to sing the song
Girl 1: sure
Girl 2: so no one told you jack was gonna be this gay 'clap clap clap clap clap' the way he talks he walks and he has a fat chode that is the jack gay song

The Jack Gay Song by jack gay song writer September 14, 2018