Ball humper 

A ball humper is when someone is forced to carress someone else's balls.

"Girl, you are such a ball humper."

Ball humper by P. Orno May 31, 2018

ball hummer 

noun.

The art or act of taking testicles into your mouth and humming at the same time.

He's so hot, I really want to give him a ball hummer.

ball hummer by TShel August 10, 2006

Ballpumper

A man who regularly vacuum pumps his scrotum to enlarge the nads and the sac. Ballpumpers are usually also cockpumpers.

Look at the bulge in that guy's jeans! He must be a ballpumper.

That old guy is either a ballpumper or his ticker's not up to the task of clearing edema.

Ballpumper by Tigerdave October 26, 2008