Definitions by TheMountMaster

testicular penetration 

The true meaning of "Balls Deep"
IT WENT SO DEEP, THE BALLS PENETRATED THE ASS AND EXPLODED EVERYWHERE INSIDE. Can also refer to vaginas as well.

Jayce : Are you ready for some testicular penetration baby?
Ezreal: Oh yes, I'm always ready

testicular penetration by TheMountMaster November 15, 2014