Top Definition
When a man's two testicle collide within the scrotum resulting in a painful feeling. Much like that desk toy with the swinging balls.
Why'd you stop running?
I have Newton Balls
by Gordonopus September 05, 2010
1 more definition
When you are at a sauna after working out and you are naked and start rocking hips side to side as to hit their balls together.
Guy 1: Dude I was at the gym and some guy was playing Newton Balls next to me.
Guy 2: Ewwww.
by noobslaya703 May 16, 2011

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