Definitions by The Squater

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.

Jack Squat by The Squater April 24, 2019