Butt butt

We are in Boulder for one more night. Leo and Mia were getting ready for bedtime, having just taken a bath. I'm trying to read them a book. Mia has decided to wear only a bathrobe and cowboy hat, and is really tired so she starts dancing around. Leo says, "Missy, you better zip up your clothes because your butt is showing". So Mia starts dancing even more in her open bathrobe and starts singing,"put your butt in your finger". So Leo sits down at the miniature piano and plays and sings,"put your butt in your penis". At which point I break down into laughter, unable to read anymore, wondering when social services is going to come in and take me away.