Mold sack 

An ugly piece of crap, or someone worthless to yours or anyone else's life, and they smell and look like piece of moist moldy dump

Tony Francin, just leave, everyone hates you plus you are a Mold Sack

Mold sack by Primetime#1 June 5, 2010

moldsack

One of the greatest call of duty players in the world

"moldsack joined the game?" "Oh shit dude back out now"

moldsack by moldsack November 21, 2011