Just in case you can't understand her speech, here's the transcript:
Me: "Okay Megan, tell me what happened to you."
Megan: "Well, I was at the dentist appointment, and they had to make my teethies fall asleep."
Me: "So now what's wrong with you--" She attempts to crack a grin...
Megan: "I can't get this side of my mouth to go up!"
Much giggling and laughter follows. The kid looked like she had a neurological disease. Every time she tried to smile, her mouth would pull off to the right side. It was disturbingly funny. Yay for camera phones!