1. One of the most bad-ass demon slayers/killers to ever be brought forth into fucking existence.
2. Usually refers to your death multiplied by a very large number. If someone uses this phrase in a sentence, it means they are located within Hell in its deepest, darkest, and hottest pit, and still sensed you shit your pants.
Ok, Kyle ; (... I see how you want to go at it. Man, fuck super saiyan, prepare to face the wrath of the Doom Slayer, fool...
When you fail at something in life (eg. failing an exam or not getting a job), go home and spend an hour just standing in the shower, propping yourself up against the wall with your eyes on your feet.
Caleb knew the only thing to do after he didnt get prefect was take a failure shower.