While looking for Marge on the coast, Homer, Bart and Lisa stopped at Homer's cousins' house. During the dinner, the cousins asked Homer how is Marge. Homer said that she was killed by a falling air conditioner and as part of settlement, her funeral was air conditioned. He then went to use the outhouse, which turned out to be a recording studio.
Homer's cousins wife-nor her family- are technically related to Homer. (The family's dog and Santa's little helper are brothers)