Also known as 'Goth Day', Bat's Day is the last saturday in August where goth kids from all over the U.S and Europe flock to Disneyland for a day of princess boo-ing, high heels, and black lipstick. While it's not officialy reconized by the park itself, the park staff is well aware of its existance.
Actress Playing Snow White: "I'm gonna trade shifts with the new girl. I don't want to be around on Bat's Day, and the she wont know about it yet."
Cinderella: Ahh! That goth guy just felt me up!
Sleeping Beauty: Duh, what'd you expect? It's Bat's Day!