Patients do the darnedest things?

Last week I had a patient who quacked like a duck!I kid you not! She was in my chair and evidently when I lay her back she experiences a partial airway obstruction . I was treating her anterior teeth and she helped me by retracting her tongue. Every so often she would make what sounded like a duck quacking noise with her tongue. I believe she was experiencing "wake apnea" and needed to breathe better. Her tongue must have been blocking her airway.