scroterboat 

v. int. The act of pushing one's face in between ones scrotum, and rocking one's head side to side very rapidly while making a vigorous, lip-vibrating "brrr" sound.

That chick gave me the best scroterboat ever. My balls are now numb

scroterboat by djnick33 September 3, 2007

Scroterboating 

Similar to motor boating breasts but, happening to the nutsack instead.

Martin: What are you doing?
Thomas: I am gonna give you something.
Martin: W-What?! My pants!
Thomas: This is called Scroterboating
*Thomas motorboats Martin's nuts.*

Scroterboating by D0CT0R LEM0N March 31, 2017

Scroterboating 

The act of motorboating a scrotum.

After I took my pants off, she just started scroterboating me.

Scroterboating by Walt88 January 22, 2022

scrotoboat

Motorboating a scrotum; engulfing your face in balls and blowing in a side to side motion enthusiastically.

Baby, I can't wait to get home and scrotoboat you. Don't even think about washing that funk off!

scrotoboat by Shillbilly.jr July 16, 2022