Sanford and Son (1972)

S3E17 Fred's Cheating Heart

A man arrives at the Sanford home asking for donations for a heart association, and Lamont learns some intriguing details about heart attacks. Seizing the opportunity, he plans to use this new knowledge to his benefit. When Fred later pretends to have a heart attack, Lamont insists on taking him to the hospital for a checkup, refusing to accept any objections.