Because I said so.

CML: Hat!

Me: Hat?

CML: Yes.

Me: But we are inside. Eating snacks.

CML: Yes. Snack! Wawa! HAT!

Me: Cor. You don't need a hat.

CML, stamping: HAT! Please! HAT PLEASE! HAT!

Me: Are you sure?

CML, vehemently nodding: Yes. YES!

Me, resigned: Okay.