A statement of surprise, annoyances, joy or any sort of emotion you can think of. That refers to ones ball sack at the same time.
"Oh my sack that lion just attacked that guy."
"Oh my sack the item of 1337 uberness dropped!"
"WTF is that noob doing... Oh my sack!"
"Oh my sack the item of 1337 uberness dropped!"
"WTF is that noob doing... Oh my sack!"
by War bastard of the eastern lands March 11, 2008

a game in japan where the man bends over, lets his ball sack dangle and girls take turns punching it over and over again like a punching bag, first one to pass out losses
man did you catch that episode of japanese sack punching lastnight, i cant believe anyone is dumb enough to do that
by urbanman199876 November 4, 2011

by Samantha June 27, 2004

guy: oh man i want you so bad
girl: woah woah there, calm your sack these legs ain't open for no one except my boyfriend!
girl: woah woah there, calm your sack these legs ain't open for no one except my boyfriend!
by The Calm yo Sack Man November 16, 2011

gay guy to timid gay guy who is still ion closet: Dude, lick my sack or I'll shove my cock in your ear.
-lick my ponch
-lick my scrote
-shave my ball sack with your cats tongue
-lick my ponch
-lick my scrote
-shave my ball sack with your cats tongue
by SkinnyPete January 5, 2004

"You can lick the back of my sack."
"Justin likes to lick the leftover toilet paper from the back of my sack."
"Justin likes to lick the leftover toilet paper from the back of my sack."
by Veeetoe April 27, 2006

by dangerdog36 August 3, 2017
