"Who's 'Lucifer'? I'm not sure if I've heard of him before." "In some religions, it's another name for the head ruler of Hell. Other places, he's one of the higher-ups. Essentially, he's a Very Important Demon. Probably ungodly powerful - and I mean that literally - and not someone you'd want to cross." "Oh. Good thing I was too professional to make fun of him, then." "Yes. *Very* good thing."