Where you move your arm back and forth in a sawing manner in a persons crotch, trying as if you were to saw them in half up their body. They experience a very painful sensation as their genitals are "sawed".
Dude, i was sawing him so bad that one of his balls got lodged in his stomach.
When a person moves their arm back and forth in a sawing motion on a person's genitals which can end up being very painful.
Girl 1: How long was he sawing you for?
Girl 2: Idk..10 minutes maybe.
Girl 1: WHAT!?!?!?! That sounds terrible!
Girl 2: It was and it hurt like b**ch.