1 definition by Crafty Madhes
A derogatory name given to a person who is withholding a comment/skill/resource in order to purposefully change the atmosphere in which he is residing by then revealing the sandbagged item.
A person who is a Ballast is one who pretends to have no Snickers when asked, but really does and is just waiting to lower the general mood of his surroundings with the no, then appear bring the mood that much higher when the hidden Snickers have been revealed.
by Crafty Madhes November 15, 2010