The Simpsons Season 5 Episode 21

Marge arranges for her mother Jacqueline Bouvier to start dating Grandpa Simpson and all is going well until Burns cuts in and takes her away from Grandpa Abe. When he hears that she is getting married to Burns he goes to the church and,in a nod to the climax of the film 'The Graduate',runs away with her and,after she has declared that she doesn't want to marry either of them,they get on a bus together.