Getting fired from your job. Australians use this phrase a lot. Probably from the pioneer days when the boss would throw a bag at the farmhand/miner/builder/labourer's head, tell him to pack his stuff and get lost.
"Bloody hell, the boss gave me the sack!"
"Are you going to get the sack for skipping work yesterday?"
"Are you going to get the sack for skipping work yesterday?"
by oneof20million June 10, 2009

by TTENNEB EKIM September 27, 2005

by Stan "the sweet stink" D... June 20, 2011

A sack full of the harshest insultes know to the modern man
-to be a literal leg
-a replacement swear word in case you're in a dangerous area
-to be a literal leg
-a replacement swear word in case you're in a dangerous area
"Dude did you see the teacher today? He was being the biggest leg sack"
"I wanted to go out tonight, but my mom was being too much of a leg"
"I wanted to go out tonight, but my mom was being too much of a leg"
by Mr. Leg November 21, 2014

A term used to describe the virtual balls of people who trash talk in an online thread because they know you can't throttle them through the screen.
by TheGhostrider420 August 7, 2014

A prank that is pulled usually in high school by taking someone's back pack, taking everything out, turning the backpack inside out and putting the stuff back in.
by YarmouthClippers June 13, 2009

Boy : look at that sperm whale
Girl : sperm whale? Thats a Whale Sack!
Boy : whats a Whale Sack?
Girl : you.
Girl : sperm whale? Thats a Whale Sack!
Boy : whats a Whale Sack?
Girl : you.
by whalesack May 26, 2014
