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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??
by mr nova October 23, 2009

Words related to Newton cradle

boobs girls pranks sex tits