Dental hygiene...or not

Lucy and I (who else? she's my sidekick) just came from the dentist where I had my teeth cleaned. On the way home, we were talking about what the dentist has told us about how to care for our teeth.
Lucy: One time I forgot to brush my teeth and daddy said I didn't have to do it that time. [Oh really? Interesting to note.]

Me: Oh, but the dentist just said we have to brush our teeth two times a day!

Lucy: Hahahahahahahaha! (serious voice) I don't listen to the dentist.

Already bucking the authority of the dentist. Not good.