One Panel #500: Why Batman and Robin Sleep in the Same Room

From Batman: "The Ghost Gang Goes West" by Bill Finger, Bob Kane, Jerry Robinson and George Roussos, World's Finest Comics #4 (December 1941)

Get your head out of the gutter, Fredric Wertham! It's in case somebody throws a rattlesnake in someone's bed and doesn't wake up! This way, they have twice as many chances to survive a deadly supervillain trap!

Happy 500th, One Panel feature!