by Wangrom October 12, 2010
During the act of two men penetrating a single orifice of another person, their testicles collide causing a swinging effect similar to that of newton's cradle, the device used to display preservation of energy.
James: "Adam, you fancy doing a Newton's Cradle on Wendy?"
Adam: "Nah, me and Pete did that and my balls ache."
Pete: "Awww yuh."
Adam: "Nah, me and Pete did that and my balls ache."
Pete: "Awww yuh."
by Wangrom July 13, 2010