long sac 

1) Used to describe a lengthy period of sexual intercourse.
2) The loud slapping sound of testicles being thrust against the outer vagina.

I was on a long sac with that chick last night, man.

long sac by Miigoss June 19, 2008

Long Sack 

A crude event in Track and Field that I somehow invented while talking to Danny. It involves running a long distance, and then having your sack measure. The person with the greatest length is the victor.

Danny: "Long Jump...Track"
Me: "Did you say long sack? What if there was an event where you ran a mile and then they measured your sack, and the person with the longest sack won? Haha...yeah.."
Danny: "Haha...that is quite humorous, yet odd."
Me: "Yeah it is. I apologize."

Long Sack by JayToTheKAy June 4, 2005

Captain LongSack 

A guy whose balls are able to to the water at the bottom of the toilet.

“Oh my god my balls just touch the water in the toilet”
“Man that guy must be Captain LongSack.”

Captain LongSack by lil swervy March 30, 2019