running ball 

The act of running at a geezer and jumping into a ball shape before contact is made and hitting them head first

Going to running ball little gay john

running ball by mugDale mate May 6, 2016

running of the balls 

When a hurricane of sperm goes all over the place

Are you ready to outrun the semen in the running of the balls than cum on and run.

running of the balls by joe c January 18, 2004

Running the Finger-shuttle Between Headsville and Balls Falls 

Masturbation.

As coined by the upcoming gross and insulting movie, the Dark Show.

Sanchez: Hey, why so glum?
Rusty: Ah, my mom caught me Running the Finger-shuttle Between Headsville and Balls Falls.
Sanchez: Meaning, your mom caught you masturbating.
Rusty: In a nutshell.
Sanchez: Man, if your mom caught me masturbating, I bet I'd end up fucking her.

Running the Finger-shuttle Between Headsville and Balls Falls by theDarkShow October 23, 2010