Adam has learned the word "why", and he's not afraid to use it. It's not so very intense yet, but I'm sure it will ramp up. Sadly, it doesn't work in reverse.

Adam: I want a lollipop.

Daddy: Why?

Adam: I want a lollipop.

Daddy: Why?

Adam: I want a lollipop.

Daddy: Why?

Adam: I want a lollipop.

Daddy: Why?

Or maybe he's practicing to be a politician.