"Open, please," said the dentist to the patient. After a few minutes, the dentist exclaimed, "My goodness, this is the biggest cavity I've ever seen--the biggest cavity that I've ever seen!"
"Doctor," protested the patient, "I'm scared enough without you saying that twice."
"I didn't," said the dentist, "That was the echo."
"Doctor," protested the patient, "I'm scared enough without you saying that twice."
"I didn't," said the dentist, "That was the echo."
