sack 

A person who consistantly makes mistakes and messes up, most often in social situations. A person who acts in a manner that is looked down upon by others.

Graham spilled his drink! What a sack!

sack by Irvington December 28, 2005

sack 

To turn a person's backpack inside out, place their stuff back inside, and zipper it up. Usually takes place during class while the owner of the backpack is not paying attention and is done for a laugh when they try to pick up their backpack, realizing the straps are not there.

Origin: Schenectady High School

Watch your bags around them 'cause they might just sack you.

sack by KissTheStars December 10, 2008

sack 

Also see definition for fun sack

sack by x January 31, 2003

Sack 

when peole are haveing sex its said their in the sack

tim was bad in the sack

Sack by david r July 21, 2003

Sack 

To be brave. To have large testicles.

Yo ass better have some SACK mofo if you try that bitch slap shit on me!

Sack by Tyrone Leeroy Washinton - Capricorn January 20, 2004

sack 

VT. to expose one's sack to someone else, on purpose or by accident. Usually happens when a man is wearing shorts and his legs are spread, causing the sack to peep out the leg of the shorts.

"Hey, man, close your legs. You're sackin' me!"

"That guy must be freeballin' he just sacked me."

sack by fruity booty November 14, 2007

sack 

to like someone or wanna get with them

dude, you sack her so bad

sack by kasjdgkj October 15, 2006