know jack

Australian slang - means to understand, to know.

he doesn't know jack about rugby - he knows nothing about rugby

by An.kim September 25, 2014

jack smellingston

one of the many names Roman (creativity) from Thomas Sanders' "Sanders Sides" gave Virgil (anxiety)

look up the word "JOKE" Jack Smellingston

by panicing!pansexual January 9, 2019

Jack Avery

Jack Avery is part of pop band Why Don't We. He is 1/5 out of these amazing people. Jack has noodles for hair. He has 3 sisters and is being shipped with Zach Herron(Jachary) ❤❤

Ooh Jack Avery's voice gets me everytime in Big Plans

by Just another limelight 😁❤ February 17, 2019

jack johnston

when the shousy liquid comes out of your nose and goes back into the shoe

when the boys do a shoey he did a jack Johnston

by dhytdjkhyilrszhgouESHO July 1, 2019

Urinal jack

The act of masturbating or rubbing/cranking one out at the urinal.

It was a busy day at work, luckily I had enough time for a ole urinal jack!!!

by Steve and doug October 2, 2019

Snack jacking

The act of masterbating while simultaneously eating chocolatate pudding and being choked.

Megan brought over a six pack of pudding and helped Steve as he was snack jacking

by sefawley May 31, 2016

neuron jacking

It is possible for a person with less brain cells to hijack extra brain cells from a highly intelligent person. The most common method is when a guy sleeps with his girlfriend's head against his while sort of trapping her with his arms. When the person receiving the transfer wakes up they instantly feel smarter and know that it worked. The girlfriend will wake up feeling the same because her neurons and glial cells regenerate at a very rapid rate. This is a symbiotic relationship because the girl is just as smart yet her boyfriend isn't quite as dumb and she doesn't have to put up with his dumb ass as much.

"Im much smarter today. I think the neuron jacking worked last night "

by Challbaby82 June 8, 2016