1-When you are watching scramble porn, and you are not sure if it was really a titty or a ball sack.
2-when your ball bounces the opposite direction than you wanted it to go.
Look at that shitty titty sack.
When you reuse the same condom for the same situation
I ran outta condoms so I gotta sack recycle again luckily I’m just beating my meat
The empty sack of skin hanging off of a female cat’s belly after she’s been spayed.
My cat has such a big spay sack.
A crab sack is when the meaty cock of a male crab goes inside the anus of a human female, this act of sexual crabercorse is why we have jesus
note: This takes some planning, a pair of nylon gym shorts, and willing ..or unaware partner to work. When a guy has been doing an athletic activity and has swamp-sack (foul smelling scrotum) he will close one leg opening tight and then he gets his significant other to blow air up his shorts only to have the air circulate and exit back out the same leg hole into her/his face.
I plopped down on the couch after finishing my run. I told "Jane" my nuts were hot so she decided to blow up my short to "cool them off" but I closed off the other leg and she got the "Sweaty-Sack BackDraft"
When you put your hand in the freezer and cup someone’s balls
I was with my girl last night and she gave me that frosty sack attack
When a person is giving head to another and they lick the ball sack of the individual receiving the blowjob.
My wife loves to sack snorkel
My wife is a sack snorkeling queen
My wife sack snorkeled me last night.