1 definition by Kflop Fats
Sack is derived from the term "sack of shit". It describes someone who is unworthy of even being filled the feces that would reside within a "sack of shit". It is usually used to describe a person who is extremely lazy or is performing an extremely lazy act.
Friend #1: "Hey man can you shut the lights off?"
Friend #2: "Sorry bro. Busy."
Friend #1: "Dude you're right next to them. Just reach over and shut them off."
Friend #2: "Man that's too far away. I'm busy."
Friend #1: "Busy doing what? You've been playing League of Legends and eating toaster waffles on my couch for six hours."
Friend #2: "Exactly. I'm busy."
Friend #1: "You're a fucking sack."
Friend #2: "Sorry bro. Busy."
Friend #1: "Dude you're right next to them. Just reach over and shut them off."
Friend #2: "Man that's too far away. I'm busy."
Friend #1: "Busy doing what? You've been playing League of Legends and eating toaster waffles on my couch for six hours."
Friend #2: "Exactly. I'm busy."
Friend #1: "You're a fucking sack."
by Kflop Fats January 25, 2013