Why?

[liralen]

This morning, Jet was playing in the livingroom, by himself, and John overheard him doing the following conversation between two toys:

"Why?"
"Because."
"Why?"
"Because."
"Why?"
"Because."
etc.

The funny thing is that Jet's stopped asking us why so often, as I took arcangelbeth's advise and we started doing full explainations with questions to see if he understands. So I'm now wondering who he's getting that kind of conversation from...