Where?

Most kids like to ask, "Why?"

My unique child, Cade, asks "Where?" Repeatedly.

It is kind of humorous and slightly annoying. Here are two examples of our conversations:

Me: Cade, did you have fun at Peter Piper Pizza?
Him: Where?
Me: The pizza place.
Him: Which one?
Me: Seriously? Where we had dinner.
Him: Where?
Me: Never mind.

Him: Where are we going?
Me: To the doctor.
Him: Caden's doctor?
Me: Zane's doctor.
Him: Oh.
We get in the car..
Him: Where are we going?
Me: To the doctor.
Him: Zane's doctor?
Me: Yes.
Two minutes pass...
Him: Where are we going?
Me: What did I tell you?
Him: What?
Me: Where are we going?
Him: Zane's doctor?
Me: YES.
And this repeats until we reach our destination...