Say what you will about their gaudy costumes and noms de guerre, but at least none of the Batman villains are pretentious enough to insist everyone address them as Dr.
Me: how much is this?
Dollar store clerk: $1
Me: and this?
DSC: $1
Me: what about those?
DSC, sighing: $1
Me: and the stuff on the back wall?
DSC: DAMMIT! EVERYTHING IN HERE IS $1!
Me, holding out a dollar:
One cash register, please.