Dentist - "I've said too much. I really can't tell you anything about him. You know, doctor/patient confidentiality."
Liz - "Ah come on. You're not REALLY a doctor."
Dentist - "Well, if that's how you feel then you're not really a patient. And people who aren't patients don't get toys from the treat bucket."
Liz - "But there's a Batman in there!"
Dentist - "Yeh, and if you wind him up he swims in the bath."
Liz - "DAMN YOU CAPLAIN!"
