My daughters and I have a special face that we make at one another all the time. It's pretty dang goofy and it looks something like this:
The trick to making a good tooth face is to dry off the top teeth so that your lip stays stuck up above them. Then you have to bug your eyes way out.
You end up looking like a maniac.
My oldest kidlet has the best eyes for the tooth face because they're so big. Hey, do you like my 17 chins in the last picture? Do you like looking up my nostrils? Try it! It's fun!