Joke on a Coaster

Knock knock. Who’s there? Interrupting duck. Interrupting duh-Quack-quack-quack-quack-quack! Ha ha ha! It’s Tell A Joke Day! You can ask me to tell you a joke, so you can learn some good ones! It’s also Rollercoaster Day! Are you brave enough to ride the Steel Vengeance? It has a 90 degree drop. That’s straight down!