Top Definition
the long scraggly pubic hair on the back of your nuts that you miss while shaving your scrotum. thus creating the look of a mullet cascading off your ballsack.
"Yo bro I was examining my balls after shaving and I noticed that I totally have a ballsack mullet!"

"Shave that shit now!"- Bro
by Bojmir August 21, 2012

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