Somebody who acts immature, lacks in banter and is generally an embarrassment to hang around with, due to this they tend to have no friends (other than sacks), it can also be said that sacks come in packs, as sacks tend to from groups of other sacks, having photo sessions where they take endless photos of themselves, then add them to facebook, or pretending to be drunk off one beer or a sip of wine! The list of sack activities are endless.
She had one wkd and told everyone she was mortal, what a fucking sack
by YELDEP June 18, 2011

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1.(n) A piece of fabric one carries possessions in.
2.(n) The scrotum.
3.(v) To fire (end of employment)
1. "Hey, put those golf balls in the sack"
2. "Man, I just got hit really hard in the sack, I think I'm going to throw up."
3. "Man, since you suck, you are sacked!"
by Uccio June 12, 2008

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Sack can be used in a number of ways:
1) to insult someone
2) to refer to balls
3) to describe a beating / misfortune
4) to subsitute the word 'shit'
1) dude, that guy is such a sack
2) lick my sack
3) that guy just got completely sacked by that crazy mofo
4) ohh sack that hurt
by ryan tanzi May 10, 2008

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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
Guy: haha, that kid just got sacked.

Guy 2: owned
by Ernesto 4 April 03, 2008

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Verb, mainly Scottish. The act of hitting a man in the testicles.
to sack

''Shut it you slag, or I will sack you.''
by diegothehumanrocket April 23, 2006

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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.
stoner 1: Hey man let's go play with your sack
stoner 2: Alright
by sinbad master October 15, 2005

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Someone's bag of marijuana
Yo, lemme get a sack for twenty!
by Shane The Juggalo February 20, 2005

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testicles, balls, or nuts (pl.)
Mom, dad was looking at sacks on the computer!
by jawsh March 03, 2004

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