Sanford and Son - Season 6 Episode 17 A Matter of Silence
Overview: The Sanford residence is in chaos and it is all due to Fred's sudden loss of hearing. Lamont is convinced Fred has a problem, but Fred denies it but Lamont takes him to a doctor just the same. However, after the doctor removes the wax build up, Fred decides to stay "deaf" just a little bit longer in an attempt to hold Donna's attention.