jack (2) | jack shit
This page is about the slang term jack (2) | jack shit
nothing; very little
- Why don't you get out of the house and do something? You've been sittin' around doin' jack all day.
- Don't listen to John. He knows jack shit about how the economy works.
often used in the phrase "know jack about (sth.)" or "know jack shit about (sth.)"
This is typically used in American English but may be used in other varieties of English too.
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Contributor: Matt Errey