One Potato Two Potato - S5.E5

Loonette takes a stinking potato over to Granny Garbanzo's garden. When Granny shows a silly-looking potato (shaped like a duck), Loonette is amazed. She, Major Bedhead, and Snicklefritz soon use the potato in a game of keep-away, but the potato busts on them. They try to blame somebody else before Granny confronts them, at which time they own up to their mistake.