Word used by unskilled players who do not know how to ninja with it and have no idea what appropriate reload timing is.
Zombie: OM NOM NOM NOM NOM
Noob: DAMNIT! I DIED WITH THE FREAKIN' FAILCHESTER AGAIN!
Ninja: *picks up Winchester* *BOOM... BOOM!*
Zombie: Damn hax0rz is what that thar is!