It comes from the game Hacky Sack. It basically is just another known term for the "hacky sack"
I like your sack of hack Cory!
by Jason June 30, 2004
Get the sack of hack mug.
A women coughing up pubic hair lodged deep in her throat after 'ball sucking' or hardcore deep throating.
I think I 'tea bagged' Tiffany too much last night, she got sack hack
by The Spike February 21, 2007
Get the sack hack mug.