An alcoholic drink. Half Fireball Whiskey (or any other cinnamon whiskey) and Half Sprite. It gets its name from the fact that the character Bowser shoots 'fireballs' from his mouth and Bowser is a character from a videogame which means that he has a 'sprite'.
Yes, I would like a Bowser please. I am really in the mood for something with cinnamon in it.