Top definition
The male scrotum. The nut sack. The ball sack.
Rachel was sucking my prune bag last night.

I really get off wanking when I pull my prune bag.

Your mom fondled my prune bag last night braaaaahhhh.
via giphy
by Eaton Holgoode April 24, 2017
Get the mug
Get a Prune Bag mug for your father-in-law James.
Anyone or any type of animal that has it testicles cut out or has been castrated. It causes the nut sack to shrivel up like a prune
I took my dog to get neutered, & now his name is "prunebag."
by Awebb206 March 11, 2017
Get the mug
Get a prunebag mug for your fish Bob.