jack (2) | jack shit

American English
This page is about the slang term jack (2) | jack shit.

Meaning: nothing; very little

For example:

  • 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.

Note: often used in the phrase "know jack about (sth.)" or "know jack shit about (sth.)"

Variety: This is typically used in American English but may be used in other varieties of English too.

Quick Quiz:

"That guy Kenny knows jack about playing poker." He knows

a. nothing about poker

b. everything about poker

c. something about poker

Slang of the Day

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Contributor: Matt Errey