Wings S07 E12 B.S., I Love You

"Look, up in the air. It's a bird! It's a plane! It's a high-flying comedy - where the laughs always arrive on schedule!"

Joe and Brian are thrilled at the return of Grandpa Hackett, but Helen isn't so sure he is who he claims to be. Meanwhile, Antonio refuses to continue a chain letter, which everyone else gets and passes along, and begins to suffer for it.