ScoobyDoo Movie Ultimate Joke Book Author:Howie Dewin Q: What white, fluffy food does Scooby-Doo like to eat at the movies?A: Pup-corn!... and he'll be getting as pup-corn as he wants after his first live-action movie hits box office gold this summer! You'll find this joke and hundreds more in Scholastic's first-ever Scooby joke book -- with tons of gags, riddles, and knock-knocks based on the movie.