Blood Feud (The Simpsons)

"Blood Feud" is the twenty-second and final episode of the second season of the American animated television series The Simpsons. It originally aired on Fox in the United States on July 11, 1991. In the episode, Mr. Burns falls ill and desperately needs a blood transfusion. Homer discovers Bart has Burns' rare blood type and urges him to donate, thinking the Simpsons will be handsomely rewarded. After receiving the blood transfusion, Burns sends them a card with no money. Marge convinces Homer not to send an insulting reply to his boss, but when Bart mails the letter anyway, Burns is livid. He later forgives Homer and sends the Simpsons a giant Olmec carving to show his gratitude.

The episode was written by George Meyer and directed by David Silverman. Executive producer Sam Simon and writers Al Jean and Mike Reiss came up with the idea for the episode. A co-worker had recently needed a blood transfusion, and the writers thought it would be funny if Mr. Burns had one. Although Meyer was credited with writing the episode, Jean and Reiss re-wrote and polished the script. The episode includes the debut of the Olmec head Xtapolapocetl, which would become a common background prop in the Simpson home.

"Blood Feud" was part of the season two production run, but was completed behind schedule. It was originally broadcast on July 11, 1991, as part of "premiere week", the Fox Network's attempt to expand the typical 30-week prime time season and gain new viewers for the fall. In its original broadcast, the episode finished 24th in ratings for the week with a Nielsen rating of 10.8.