Oscar's Rotten Birthday is a 1981 Sesame Street storybook about Oscar the Grouch's birthday. Oscar lives in a trash can, and gets regular deliveries from the Mudman -- so there's no way that he'll enjoy that the Sesame Street residents are preparing. The party drags on. The group plays Pin the Tail on the Pig, Toss the Trash in the Can, and Dunk for Rotten Apples. Finally, Cookie Monster gives Oscar a messy mud cake with a broken candle. Despite himself, Oscar is pleased with the party -- until he realizes that he has to wait a whole year until his next rotten birthday.