The Jack Finn 

When you grab your partners anus and whip your dick out and shove it 2 feet deep in your partners ass.

Jack: Hey niki bend over its time to do The Jack Finn.
Niki: Hell yeah...Jack Finn my ass

The Jack Finn by Steve Yzerman October 28, 2015

Flap Jack Nipples 

Lady or man nipples that are wide and puffy . They resemble Pancakes or flap jack nipples

Dude, this bitch had the flap jack nipples, they spread over her whole titty! Mmm mmmm. You gotta getcha some!!

Flap Jack Nipples by HollyPop73 June 19, 2016

studio jack 

When you take that shitty baby protector off of a bic lighter.

"Hey Nate Dogg can you Studio Jack this lighter for me?"

studio jack by Daniel iix April 2, 2017

bo jack off 

Getting a handy J from a baby girl while watching "Bojack Horseman"

Uncle perry likes good ole fashion bo jack off from good ole babygirls

bo jack off by Uncle_Perry12 May 16, 2017

lance jack 

A Lance Corporal in the British army

Jonesy has just been promoted from private to Lance Jack

lance jack by Johno1! August 2, 2017

Jumbo jack no cheese 

When someone can fit your penis, and balls into their mouth while at the same time sticking their tongue into your ass

Bro, that girl from last night gave me a jumbo jack no cheese. I think I'm in love

Jumbo jack no cheese by Leej07 February 8, 2018

Poop-jack 

The activity in which a male masturbates while defacating on the toilet.

Guy waiting in line for stall: "Hey how are long are you gonna be in there? Are you Poop-jacking right now?"

Guy in stall: "No I'm just pooping. I am browsing though."

Poop-jack by YeetYateYote July 18, 2018