Is that why the bathroom door is locked (from the inside)

(As I'm unscrewing the doorknob)
Me: "Now, why did you lock the door again?"
Penelope: "Because so that Ariel won't get in the way of Tinker Bell and her wand."

Oh, I see, a perfectly good reason to lock the door from the inside and close it, with the light on too. lol 3 year olds. :)