Why wouldn't you wear pants on your head?

Here's my funny story for today:

I finished reading a book to the girls, and I'm kissing them good night. Miss Gigi has a pair of pajama pants on her head.

"Why do you have pants on your head?"

"It's my bedtime hat. I'll take it off."

"Well, you don't have to."

"Will my hair get wacky?"

"Probably."

"I'll take them off."

How do they come up with this stuff? It was too funny. I think she should be a performer when she grows up.