Denim Jack with patches 

A typical piece of clothing worn by 'indie' people. Many people named Jai will be seen wearing this jacket. There is no pink patches on the Jacket as people who wear it like to keep there man-ly-ness and pink is no man-ly.

Oh wow look at his indie-ness with his Denim Jack with patches.

Denim Jack with patches by heatherrrrrrrrr August 22, 2011

Post-jack courage 

(n.) Similar to "Liquid courage."

After just having masturbated, the feeling of being able to call up that girl you've always wanted to go out with but were too chicken-shit to do it before. Often short lived.

I finally called Emily last night while I was still hyped on post-jack courage!

Post-jack courage by DownloadFailed November 6, 2011

Hammer Jack 

Masturbating without lotion

Tom: " Do you Gillette "
Fred: "No I Hammer Jack "

Hammer Jack by FFBurger1 September 15, 2012

Rack Jack 

The act of masturbating while in your bed (rack) when you're incarcerated

Bunkie: dude. Why is our rack shaking!?

Me: I couldn't stop thinking about my girl so I figured rack jack for a bit

Rack Jack by GOD for short February 3, 2015

Scat jack

To pleasure oneself using a syncopated and improvised rhythm to delight and surprise one's penis.

I scat jacked last night and sounded like Bobby McFerrin when I came.

Scat jack by Enginerd8 August 3, 2015

Reverse Jack Sprat 

Thin girl, fat guy relationship based on nothing but mutual admiration.

I'm in a Reverse Jack Sprat, and my lady needs a Kevlar vest. Any recommendations?

Reverse Jack Sprat by Scipio December 10, 2015

thunder jack

When you jackoff during a storm and finish after lightning strikes.

"Dude, it was pouring so hard last night I almost couldn't tell if I was able to do a thunder jack."

thunder jack by Ponyboymlp April 22, 2016