A sack is a high school prank. This is how its done.
Step 1: Grab someones bookbag.
Step 2: Empty out the bookbag.
Step 3: Turn the bookbag inside out.
Step 4: Put the books back in.
Step 5: Zip up the bag, and have the metal zipper holding things on the inside of the bag
Step 1: Grab someones bookbag.
Step 2: Empty out the bookbag.
Step 3: Turn the bookbag inside out.
Step 4: Put the books back in.
Step 5: Zip up the bag, and have the metal zipper holding things on the inside of the bag
by Ernesto 4 April 3, 2008

One of the greatest past-times of all time. Also known as hacky sack. Probably invented by a bunch of stoners or perverts that thought it would be funny if they invented a game where you smack a sack around.
by sinbad master December 28, 2005

eg: person 1: fuck you wanna fight bro. person 2: nah im algood later bro.
audience: fucking sacking it.
audience: fucking sacking it.
by pissyboytickenontheocean December 14, 2017

no sack
by big poppa 302232 July 4, 2010

by Templar314 December 17, 2016

The act of being incredibly lazy, as in lying around like a sack of potatoes. One who sacks is often seen lounging on their couch all day playing video games and watching movies.
Jim: "Yo have you seen Alec today?"
Mike: "Not yet. Did you check his apartment? Bet you he's sacking on the couch."
Mike: "Not yet. Did you check his apartment? Bet you he's sacking on the couch."
by BroBro23 February 28, 2018

by GhøstByte86 December 2, 2019
