sack hangs
when a ball sack hangs low. Generally low hanging sacks mean you shoot big loads.
his sack hangs, when he was pounding me his balls kept slapping me.
hanging sack
When a guy doesn’t wear underwear under baggy shorts and leaves the house. Synonyms: going commando, free balling
He was hanging sack when he went to drop off mail at the post office and get coffee.