Being the heavy metal disciple he is, Dave Moore dedicated this Dave's World to a couple of metal music facts.
Ok, so I'll give you a clue - it's not 'death', 'kill' or 'devil'. Doesn't really help much, does it?
Dave's reveal is much more dramatic than anything I could type, so click into the podcast for the answer.
I think you'll find the "least used word" particularly interesting.
Check it out in full by pressing the play button on screen.