“Homer Simpson in: “Kidney Trouble”” is the eighth episode of Season 10. It first aired on January 23, 1998. The episode was written by John Swartzwelder and directed by Mike B. Anderson. On behalf of Homer’s infamous ignorance, Grampa Simpson falls victim to a textbook kidney blowout. But when Homer steps up to offer a donor kidney, he quickly finds himself suffering from a much more common phenomenon: cold feet