Jack Squat

Another way to say Jack Shit.

there are users on this website who do not know jack squat about writing a good definition.

by Light Joker May 21, 2004

Jack Squat

Something you don't know.

I don't know jack squats about music

by Mr13BF July 9, 2012

Jack Squat

The act of masturbating while crouched directly over the face of someone that is sleeping. Upon nearing completion, you let out a yell so the sleeping recipient wakes up in horror while you simultaneously finish.

Bill gave his girlfriend a Jack Squat during her evening nap, suffice to say they're not together anymore.

by The Squater April 24, 2019

jack squat

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."

by chico del nacho September 19, 2003

jack squat

absolutely nothing

I didn't win jack squat when i went to Las Vegas last weekend.

by Natalie September 20, 2003

jack squat

not anything, absolutely nothing

I know jack squat about thermodynamics.

by piewire September 19, 2003

jack squat

lack of knowledge

You don't know Jack Squat about anything

by Hoboken Johnny September 20, 2003