shark teeth

Today grams and I got to stop in Foley on the way home from our womens week-end in Duluth. We only got to be there for a couple of hours -
.... oh what you can learn in two hours at the Harrens!
Conner Dallas went to his first dentist appointment. When the dental technician looked at his teeth she was sure she could tell that he sucked his thumb?! Well, Dah - he is a beautiful natured little boy... aren't all thumb suckers?
.....Well, Ms. Technician asked if Conner can open his mouth so she can see all of his baby teeth...
Conner very assuredly tells her:
"These are not baby teeth, they are shark teeth."
What can a grandma say other than if your going to mess with the big boys... make sure they don't have sharks teeth!!!