Ataraší asobi o kangaejó (E73)

One day, Bonobono, Chipmunk and Raccoon are feeling bored and decide to think up a new game. But all Bonobono and Chipmunk come up with are standing on acorns and digging up rocks and grass. Raccoon angrily rejects their ideas. Raccoon wonders if he can make a game by rolling Bonobono's shell when it hits him. (Crunchyroll)