Hack-Off 

n. A term that describes the action of playing hacky sack; v. To play hacky sack. Adj. Stoner

Hey Man Let's go Hack-Off

Teacher - "Why are you late to class again?"
Student- "Oh sorry I was Hacking Off with all of my friends"

Hey man pull your sack out I wanna Hack-Off

Hack-Off by OneGiantIndian March 10, 2011

HACK OFF 

A new tradition started by Jim Rome on his sports talk premier radio show. The worse callers of the year are invited to call the show and the host and his xr4ti crew rate the bad calls. They are looking for train wreck callers with lame takes on sports and life. The reality is that Rome himself has turned his show into more of the View on Radio, since the departure of his long time producer Travis Rodgers, and the incorporation of his new producer Kyle "Mommas Boy" Brandt.

During the Hack Off this year, there were many crappy callers. But the worse was a turd named Vinny Mac. So he won and was invited to the Smack Off (as defined in the urban dictionary).

HACK OFF by The Bunders of Wrath November 9, 2010

hack'n off 

hack'in off is the act of playing hackysack. a term used by advent hackey sack player. pluss its funny cuz' it sounds dirty but its not.

hacker1: waddya' doing?
hacker2: hack'n off. wanna join me?
hacker1: K, lets get a few more people in the circle,though
bystandard:...ew *sees what hackers ment* ooooooohhhhhh

hack'n off by a kewl guy July 28, 2006