jacked up

The look of a muscular, athletic body.

Bruce Lee's physique was really jacked up.
Arnold looked really jacked up in "Pumping Iron".

by Rev. Sully June 12, 2007

jack d

Slang for Jack Daniels

Let's split a bottle jack d

by GyldenD December 6, 2006

jack squat

lack of knowledge

You don't know Jack Squat about anything

by Hoboken Johnny September 20, 2003

jack shack

A building which sells sex toys and porn videos and has 25 cent peep shows in the back room.

Hey mom, gimme a roll of quarters so I can go down the jack shack and rub one off.

by mws August 6, 2003

Jack shit

This term is used to describe someone who thinks they know everything yet are often wrong. They will argue and lie to be right. Often get louder when challenged. It can also be said they have shit for brains. Often offer unnecessary information just to have something to say.

Said to someone who is the offender."You know Jack shit about everything shit for brains".

by Lordsmith October 26, 2010

Jack attack

To have cardiac arrest while masterbating.

My grandfather had a jack attack.

by Joe Blumkin March 2, 2007

jack johnson

1. one of the most amazing musicians in the world, also a surfer who used to ride for Quicksilver, he was born in Hawaii and he made 2 of the greatest surf films ever: september sessions, and thicker than water. also hes really hottttt and awesome.....

it would be awesome if i got to chill backstage with JACK JOHNSON when i go to his show in september

by banana pancakes March 1, 2005