For the love of Pete!

Kayden's new thing the past couple days has been "Why?" To every answer we give him is his question of "Why?"

One such conversation with his 13 year old aunt:
I forget what the topic was, but she have him the answer, then this ensued.
Kayden: Why?
Aunt: Because
Kayden: Why?
Aunt: Because
Kayden: Why?
Aunt: Because
Kayden: Why?
Aunt: Because
Kayden: Oh!!! Okay.
End of conversation.

I asked him last night where he learned this. His response, "I don't know." Great. Well, whoever taught him this, BEWARE!!!! This is quickly growing old and once I find out who you are, I'll be after you to make your life as inquisitive as mine! Unless he learned this from TV, then I'm just out of luck.