The Flintstones S02E25 - This is Your Lifesaver

Fred and Barney save a guy named J. Montague Gypsum from throwing himself off the George Washingstone Bridge. In return, Gypsum offers to be their servant for life. But Gypsum is a con man who tries to take over the Flintstone household. Fred tries to come up with a plan whereby Gypsum can save Fred's life so that they can then be even and Gypsum can be sent on his way.