Newton cradle 

The act of smacking a girls large boobs so that they sway from side to side . I.e in physics the Newton cradle. Best performed with the question, "do you knw what a Newtons cradle is?" Lol

Dude, this chick had the hugest tits ever!
-well...did you Newton cradle her??

Newton cradle by mr nova October 23, 2009

Newton's Cradle

Describing the swinging action of at least 2 men's testicles as the slap against each other during anal sex.

They were at it so hard that their balls' were bouncing like a Newton's Cradle.

Newton's Cradle by Meatspin March 23, 2007

Missouri Newton's Cradle 

The Missouri Newton's Cradle is an activity in which 4 or more men tie a rope or string with a weight around their scrotum. They line up, generally close together and facing one direction, and the one in the front pulls their weight forward and releases it so it hits the weight behind his. This will go on to the last person and then you have completed the Missouri Newton's Cradle.

Have you seen Josh, he has been walking funny ever since he took 50 pounds at last night's Missouri Newton's Cradle.

Missouri Newton's Cradle by Iaasic the conquer September 29, 2019

Newton's Cradle

Newton's Cradle refers to a girls crotch when she has skinny thighs so they do not touch each other when she is standing up.

This phenomenon enables you to tag her from behind, allowing your balls to swing freely between her legs without touching them, tapping the front of her, like the famed executive ball clicker --- the Newton's Cradle.

This phenomenon enable you to tag her from behind, allowing your balls to swing freely between her legs without touching them, tapping the front of her, like the famed executive ball clicker --- the Newton's Cradle.

She was in really good shape, a total Newton's Cradle.

Newton's Cradle by DTLWordsmith July 2, 2009

Newton's cradle

The horrific and often timberfelling image of two men attempting a DP in a grumbleflick when their knackers collide.

Is that? Oh my God, I can't bear to look!

Newton's cradle by Ted Hamer June 22, 2004

Newton's Cradle

A two-man variation on 'teabagging' in which the four testicles represent the swinging balls of a Newton's Cradle. The slapping of the two scrotal sacs together in an approximation of the cradle motion is optional, if physically achievable.

Joe was so wasted, we took about 30 pictures of him getting a Newton's Cradle while he was passed out.

Newton's Cradle by Bee-ritt July 16, 2009

Newton's Cradle Cup 

When a man performs a Newton's Cradle with a pair of breast. He sticks his head inbetween and lets them hit his cheeks

Zach: how was that lame Barmitzvah.
Derek: it wasn't lame, Lassie let me perform Newton's Cradle Cups.

Zach: she's like a D Cup!
Derek: I know, I got a concussion

Newton's Cradle Cup by WheezyLegere October 30, 2015