It's been a while since I've thrown something in the Kids Say the Darndest Things pot. Here's an exchange James and I shared last night.
James: Daddy, what's 100 + 100?
Daddy: 200!
James: Nope... it's 2000.
Daddy: 100 + 100 is 200.
James: Actually, you're wrong. It's 2000.
Daddy: Who told you that?
James: Nobody, I just know it. 100 + 100 is 2000. I figured it out myself.
Daddy: What colour is the sky in your world?
James: Blue!
I think this is the new math they're now teaching.