Make Me Laugh:

An old farmer and his wife were leaning against the edge of their pig-pen when the old woman wistfully recalled that next week would mark their golden wedding anniversary.”‘Let’s have a BBQ party, Homer,” she suggested. “Let’s kill a pig.”

The farmer scratched his head and said, “Gee, Ethel, I don’t see why the pig should take the blame for something that happened 50 years ago.”