Grampa gets a hearing aid and finally hears what everyone has been saying about him. Meanwhile, Mr. Skinner discovers that his mother has kept the ultimate secret from him.
First Air Date: 1989-12-17
Runtime: 00:22:14 minutes
Genre: Family, Animation, Comedy
Stars: Dan Castellaneta, Julie Kavner, Nancy Cartwright, Yeardley Smith, Hank Azaria, Harry Shearer