jack shit

Nothing, or something equivalent to nothing. Jack shit has the remarkable property that its absence and presence are identical. Typically used with or without a negative to describe a total lack of knowledge, value, or significance. Its use carries a strong negative connotation which can express frustration, disdain, ignorance, or other negative qualities.

I don't know jack shit about that. / I know jack shit about that.
It's worth jack shit. / It isn't worth jack shit.
I didn't get jack shit. / I got jack shit.

by cazort June 7, 2005

jack shit

A term used to describe a lack of anything.

I ain't got jack shit to do. You don't have jack shit. I don't owe you jack shit!

by Carter SN October 2, 2005

jack shit

1) A term most commonly used for when people describe that they don't know, or have not done anything.

2) Probably the name of some guy somewhere, who i'd -really- like to meet.

Bob: "Bill, what do you know about egg products?"

Bill: "Heh, Jack shit, Bob."

by Meik April 2, 2003

jack shit

having absolutly nothing.

"I don't own jack shit!!!"

by PotatoChip May 30, 2003

jack shit

1. To have nothing.

2. In texas holdem hole cards consisting of jack two of anything.

Ie: I have jack shit for money.

I had to fold when I caught jack shit.

by phoenix 1997 July 12, 2010

jack shit

1. jack rabbit feces.

2. something plentiful and omnipresent, yet nonetheless worthless.

3. nothing, or nothingness
(see jack squat)

"This here jack shit ain't worth jack shit."

Incorrect: "He don't know jack shit."
Correct: "He knows jack shit."

by Joe Bone March 11, 2005

jack shit

masturbating while taking a shit

I just took a jack shit

by TknucksSucks November 2, 2010