The game is a quiz. It gives you random questions. You can choose whatever one of the choices you prefer. There are a total of 10 questions. After completing the quiz, the game tells you which one of SpongeBob's front teeth you are based on the question choices you selected.
All of the questions have anywhere from 2 to 6 choices to select.
Question 5 ask what 9 + 10 is. One of the answers is 19, the other is 21. This is a reference to an internet meme: 9 + 10 = 21.
Question 7 has a picture of an Xbox 360 controller as one of the selectable choices.