The excess amount of skin between the scrotum and the taint resembling a cat suspended by the nape of its neck. Lacking elasticity in the skin surrounding the ball sack. A sack in need of a ball rejuvenation.
"I keep my sack from touching the toilet water by pulling them up by the ball nape"
"Do these pants make my ball nape look big?"
"No, those pants don't make your ball nape look big, your ball nape makes those pants look big"
"I don't require a towel after sex to clean her up with, I use the Nape"