Kialo requires cookies to work correctly.
Does pineapple belong on pizza?
It is really funny to have pineapples on pizza, because it is unexpected, unique, and almost strange. That confusion is just funny, which makes the pizza even an more joyful experience to eat.
On pizza you can add anything you want. Who cares?
Pinapple on pizza is so common that most people find it expected and normal, and therfore not confusing or very funny.