One of Mario's most iconic power ups is the fire flower. You can't tell me you don't get excited when you see that flower and know you are about to cause some fiery havoc in the Mushroom Kingdom... and everywhere else. Really. EVERYWHERE. You can even shoot a fireball underwater. Why? How? Theorists, I want answers and I will not stop until I figure out what the SECRET behind Mario's fireball is. Let's a-go!