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

Struggle Jacking

The action of groups equating issues with the struggles African Americans have faced in the United States, no matter how small or ridiculous they sound.

Johnny Hall that struggle jacking dumbass really tried to equate wearing a mask with slavery. This dumbass then said that social distancing is jim crow all over again.

by Bigrick9 October 5, 2020

Jack 90

A bend in electrical conduit that is between 78 degrees and 105 degrees, not forming a true right angle.

Steven ran that conduit up there, but it is a jack 90....take it down.

by Atticus Danger O'Rem January 3, 2020

jack s.

a pull god

jack s. is just the greatest and is a pull god.

by riiiianananananiiiiii February 22, 2019

Jacking Black

The act of masturbating whilst really high so that when you jizz all the blood rushes from your head and you black out. May be hard to achieve.

Also called Knocking Off.

X: "Ben and I tried Jacking Black last night"

Y: "No Way! You guys are crazy! Any success?"

X: "Yep, I totally Jacked Black!! Ben didn't manage to though. It really isn't easy!"

by Jacking it in San Diego April 18, 2015

Jack Vincent

A man who constantly yells his First and Last name when he Kills, or Humiliates someone...
specifically the Undead

“IM JACKIE VINCENT”-Jack Vincent 2016

by DooDoo Head Jones November 17, 2019

Jack and Miley

An absolutely amazing person with a great sense of humour. His quotes daaske you with amazement. He will always make you happy and will make you feel like you are invincible. Jack is always trustworthy and He is always the first person you will talk to about anything that's bothering you and He always sorts it out and makes the world seem alright; it doesn't matter how bad you are feeling he always cheers you up. He never fails to put a smile on your face. He will frustrate you when he says he isn't good enough because you know that it just isn't true and that he is just the best person ever. Jack is very good looking. His music taste is just incredible and he always knows how to lighten the mood. He is a kind, compassionate and caring person and even though he never sees that in himself he deserves to know that it is 100% true. He is just amazing. He also is sooooo good at football and spends most of his time texting Miley. Miley is a caring and funny. They share quotes and express felling towards winding people up and they are both super competitive. Miley are usually blonde but sometimes have brown hair. They have hazel eyes and she’s beautiful. She can make anyone laugh and can make anything seem funny. She has one main best friend and Miley and her best friend spend most of their time together. If you meet a Miley keep her forever and ever. She’s the best person you could ever meet.They are telepathic

They were jealous of the Jack and Miley

by Anonymous__09 November 4, 2020