High Quality Content by WIKIPEDIA articles! "My Sister, My Sitter" is the seventeenth episode of The Simpsons` eighth season. It originally aired on the Fox network in the United States on March 2, 1997. In the episode, Marge and Homer go to a party and leave Lisa to babysit Bart. Being unhappy with this, Bart does everything he can to annoy Lisa. Eventually, Bart becomes injured and Lisa has to find a way to get him medical attention without losing her reputation as a good babysitter.