Captain Jack Syndrome 

When your inner compass points you towards booty, the thing you most desire.

Nick: Damn, what was up with Rob last night? Never seen him hunt a girl so hard.
Mike: Ah dude, she is the hottest girl in school! That booty gave him Captain Jack Syndrome.

Captain Jack Syndrome by Hook Me Choob June 16, 2016

Marvel Jack 

That knobhead who goes to the park with you and your mates, yells wogwan at every person there, then gives himself brain trauma with an inanimate object.

Person1: Did u hear about that fucking kid
Person2: The one who tried to look cool by running up a skateboard ramp then fucking smacking his head into it
Person1: Yeah lol, what a Marvel Jack. He can’t read or write anymore

Marvel Jack by Dr P. Fletcher November 23, 2018

half jack 

Jacking off and ending right before you’re about to cum and then proceeding to workout right after to maximize T-levels. Proven way to get your biceps bigger
Better Pre-workout than Gnar Pump

Me: Hey Joe, why couldn’t you sumo deadlift 450 today?
Joe: Bro, honestly, I didn’t half jack today, I’m just not feeling as good
Me:Pussy

half jack by Half-Jacking December 12, 2018

Lets jack 

A memphis phrase meaning “lets fight”

Wassup bruh if you got problem “lets jack” then fuck you talking bout

Lets jack by MEMPHIZ JACKSON December 27, 2019

Little Jack Horner 

When your having sex doggy-style, and one slides their thumb into their partners butthole

Last night during sex, I surprised my girlfriend with a Little Jack Horner

Little Jack Horner by ChristmasPie April 21, 2020

Dirty jack 

The act of Being sucked off while you play with a girls ass like bongos

I have her a dirty jack last night

Dirty jack by Melonsssss April 29, 2020

Twist Jack 

When a partner is stroking a meat pole in an up and down motion while simultaneously twisting the wrist for increased pleasure. Also known as “Peppergrinding”

Sally Strokes gave me one heck of a”Twist Jack” last night in her car!

Twist Jack by Big John Swellington October 10, 2020