Some days I wonder.......

This was a phone conversation I just had

Customer: Do you have paperback books?
Me: Ummm, yes?
Customer: How much are they?
Me: They range depending on the book.... They go from around $10 up to $60 or more.
Customer: Oh. So they're not all the same?
Me: ummm, no.
Customer: I'm talking about paperbacks here. You know. Paperbacks.
Me: Paperback is pretty broad sir. There are paperbacks in every section of the store. Are you looking for the little fiction pocket sized books?
Customer: Paperbacks. I can't believe you don't know what I am talking about.

Then he hung up on me.

Is it me?