Newtons Balls 

Where a woman gets double penetrated by 2 guys and their balls clash in the middle, essentially clacking like a set of Newtons Balls.

Dude, i had the weirdest sex last night. I was having a threesome with another chick and a dude and i swear there was some serious Newtons Balls flying about.

Newtons Balls by Darryl Godoy May 20, 2008

Newtons balls 

When your railing a bitch with you best mate and your balls slap toghter like a newton's cradle, also known as an executive ball clicker.

When your railing a bitch with you best mate and your balls slap toghter like a newton's cradle, also known as an executive ball clicker.

Me and my friend brad railed this bitch and our sacs collided like "Newtons balls"

EWW man your fucken Newton baller?

Ever since Britney found out me and my friend were Newton ballers she's been trying to have us over non stop.

Newtons balls by Wallet105 October 20, 2019

Newton's balls

Originally an experiment demonstrating the principle of conservation of momentum, Newton's balls are five metal balls suspended in line by fine wire or string. When one ball impacts the rest, momentum is conserved and the ball at the other end is knocked into the air.
Alternatively, Newton's balls can be used to describe a sexual situation. When two men engage in anal sex in the doggy style position their balls slap together, creating an effect much like that described above. Gay people often feel that such a situation is baroque.

"Bastian and Gabe got the Newton's Balls effect happening last night, I could hear it from next door!"

Newton's balls by Authur C. Commons April 20, 2008

Newton Balls

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

Newton Balls by Gordonopus September 5, 2010

Newton's Balls

When a woman is being double penetrated and the 2 mens balls clash together, like a set of Newtons balls.

Dude, i was totaly like doin a chick last night and i swear there was some Newton's balls action going on, it was freaky!

Newton's Balls by Darryl Godoy May 24, 2008

Newton Balls

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.

Newton Balls by noobslaya703 June 10, 2011

Newton Balls

When guys scissor and their balls smash together

Guy1: we scissored and I got newton balls

Newton Balls by hobowdahhhh January 25, 2017