Chinese Fireball. OoooooOOOooooooh

A reference to the film 'Harry Potter and the Goblet of Fire', of which Dan is a big fan. In episode 25, at the beginning of Patreon Corner, Dan quotes the film, making fun of how the quote 'Chinese Fireball, ooooohhhh' is said when the tiny dragon is pulled out of a bag. Viewers found this particularly funny, and from there on in, it became ingrained in reader culture.