A stronger variation on the slang usage of "squat", meaning "absolutely nothing".
The origin of the phrase is unknown, but most likely it shares roots with the negatory slang usage of "jack".
"I get paid jack squat at my job."
Nothing, zero, zilch, nada, shit all. Possibly a short, fat man.
"I came out of that deal with jack squat."
"Here comes that prick, Jack Squat."
I didn't win jack squat when i went to Las Vegas last weekend.
there are users on this website who do not know jack squat about writing a good definition.
not anything, absolutely nothing
I know jack squat about thermodynamics.
lack of knowledge
You don't know Jack Squat about anything
Something you don't know.
I don't know jack squats about music
Nothing. Identical in meaning to jack shit
- it's just an equivalent for people who are scared of profanities.
Your car's worth jack squat.