Possible Clues:

• Obeys a stick-wielding doctor
• Opens up for a doctor
• Follows a doctor's order
• Obeys the doctor, in a way
• Opens up, in a way
• Follows doctor's orders, in a way
• Responds to a doctor wielding a tongue depressor
• Prepares for a depression?
• Obeys the dental hygienist
• Reveals one's 47 Down, maybe