Clerk: Uh, dude….NO.
Bad guy: Give me money or I’ll hurt you.
Clerk: With what? You ugly face and bad breath?
Bad guy: Heeeeeeeey! I want all of your money, NOW!
Bad guy: AAAAAARGH!
Clerk: Heh…Listen, idiot: You’ve got the nerve to come in here unarmed to rob me and expect me to give you money. I’d say that is pretty dumb and not worthy of my fright and the pittance you would get.
Bad guy: Dang, I just suck at life.