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.
It's worth jack shit. / It isn't worth jack shit.
I didn't get jack shit. / I got jack shit.
by cazort June 2, 2005
by Carter SN October 2, 2005
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.
2) Probably the name of some guy somewhere, who i'd -really- like to meet.
by Meik April 2, 2003
by phoenix 1997 July 11, 2010
1. jack rabbit feces.
2. something plentiful and omnipresent, yet nonetheless worthless.
3. nothing, or nothingness
(see jack squat)
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."
Incorrect: "He don't know jack shit."
Correct: "He knows jack shit."
by Joe Bone March 11, 2005
masturbating while taking a shit
by TknucksSucks November 2, 2010