A poker hand, especially in Texas Hold 'Em, that includes a jack and an unsuited card under 10.
I'm gonna raise you and go all-in even though I have jack shit. Or, Aw, you're bluffin' me, I bet you have jack shit so I call.
by stinkygordo October 7, 2008
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A term to describe someone who has or will inevetible do something stupid
Man, you are such a jack shit!
by KROD December 14, 2004
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the feces of a jack, i.e. a jackass. By extension, anything worthless or trivial.
by bumpie January 23, 2006
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Jack is the only son of Awe Schitt and O. Schitt. Awe Schitt, the fertilizer magnate, married O. Schitt, the owner of
Knee-deep Schitt, Inc.
Jack Schitt married Noe Schitt and they had 6 children: Holie Schitt, The twins; Deep Schitt and Dip Schitt, Fulla Schitt, Giva Schitt and Bull Schitt.
Jack and Noe divorced. Noe later married Mr. Sherlock and because her kids were living with them, she wanted to keep her previous name. She was known as Noe Schitt-Sherlock.
Dip Schitt married Loda Schitt and they had Chicken Schitt. Fulla Schitt and Giva Schitt married the Happens
brothers in a dual ceremony.
The Schitt-Happens children are Dawg, Byrd and Horse. Bull Schitt left home to tour the world. He recently returned with his new bride, Pisa Schitt.

Now, when someone say's you don't know Jack Schitt, you can correct them.
- U don't know Jack Schitt
- Yes i do, he's Awe and O. Schitt's son
by Primitiva May 3, 2004
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An American gentleman, with whom certain people are unfamiliar.
You don't know Jack Shit.

Perhaps not, but I'm actually on rather good terms with his wealthier cousin Theodore.
by Pipe Downn January 21, 2009
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nothing,ziltch,zero,empty,contains absolutely nothing.
Asked if he had won any money on lotto, sam replied,"nah got jack shit" There was jack shit left in the fridge.
by timothy mark kluwen April 16, 2007
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