Actual conversation that happened yesterday:
Me: Beth, could you measure the Flarke bookcases in the hallway please?
Beth: 9 and 3/4 inches.
Kim: (Exploding out of the bathroom): Platform 9 3/4?
Me: Yes Kim, we are sending you to Hogwart's next year!
Beth: helpless laughter
Kim: You're not really sending me to Hogwart's, are you?
Me: more helpless laughter