A few years ago, just before K read "Harry Potter and the Sorcerers Stone," she wanted to go to a Harry Potter costume party at the local library. She wanted to dress up as something fun and she was just entering that age when girls essentially communicate through high pitched squeeing.
Happy = SQUEEE!
Sad = SQUEEE!
Surprised = SQUEEE!
Upset = SQUEEE!
Imagine a library filled with little Harrys and Rons and Hermiones, all chasing a tiny mandrake and trying to pull her out of her pot. And every librarian in the place laughing hysterically.