Crossed into US from Canada in my old pick-up truck. Border guard says "turn off your engine and give me the key" I turn off the ignition and hand him the screwdriver. He says "whats this?" I tell him it is the screwdriver that starts the truck, I have the key but it only locks the doors. Border guy tells me "You're no threat" and waves me through. Being a boring guy has it's perks.