It can be any kind of pizza. Pepperoni. Cheese. Etc.
Everytime you think of pizza you get a point, when you get 20 points you can trade them in for an imaginary pizza. Its the best imaginary pizza ever made.
You get a bonus point for thinking of simba or nala eating pizza. -1 point for thinking of zazu eating eating a pizza.
If you think of steak fajitas well...why are you posting here? That's not pizza.