The thing about the guy that works at the Army Surplus store is that you're not quite sure at first if he's actually crazy. You walk in and he has a sign on the door about the pending rapture and you think that maybe he just has a good sense of humor about working in a store filled with camouflaged everything and machetes.
But then, after wandering around the store for a bit you hear the manager have this conversation with a customer:
Customer: "What's that?"
Manager: "Oh, that's called the Sharpie Knife. It's a knife disguised as a Sharpie magic marker."
Customer, looking confused and scared: "Why would you want something like that?"
Manager, a bit upset because he is being asked such a stupid question: "Well, you'd want it if someone attacked you and you needed a knife to defend yourself. That's why."