Ballschmeck 

The jelly-like substance which surrounds and coats the balls and inner thighs after approximately two weeks of not showering

Trevor: you I got jelly stuff on my balls!
Me: oh you mean ballschmeck?
Trevor: yeah

Ballschmeck by The reclaimer December 14, 2019

ballcheck 

to strike someone in the testicles with the intent to cause great pain. Best done when the victim is not expecting it

Bob: Hey Joe why you limping?
Joe: I made a jump shot and Tom ballchecked me

ballcheck by Huff Dodger August 30, 2009