Homer Simpson in 'Kidney Trouble' - S10-E8
Marge: Aren't you going to give him the Last Rites?
Reverend Lovejoy: That's Catholic, Marge. You might as well ask me to do a voodoo dance.
Lisa: Dr. Hibbert, I thought you located another kidney for Grampa?
Dr. Hibbert: Larry Hagman took it. He's got five of them now, and three hearts. We didn't want to give them to him, but he overpowered us.
Answer: Willy referred to an encounter he believed he had with actual aliens, while Wiggum thought he was referring to the arcade game.