essentially the same thing as dragon breath except trog is used in place of dragon so it can be said in front of the offender. 'Trog' comes from the dragon trogdor from homestarruner.com. 'Trog breath' is to be used in extreme situations of bad breath, we're talking about the kind where a tic-tac would disintegrate before touching the doodie-mouthed offenders tongue.
jason (making announcement to crowd): listen up everyone!
everyone: OH DEAR LORD! WHAT IS THAT STENCH?!
g: suckas got some straight up trog breath