Selmas choice- in the fourth season is another classic
Plot(from wikipedia)
After seeing an ad for Duff Gardens, Homer, Bart, and Lisa decide to go. As they are getting ready to leave, Marge tells them that Great Aunt Gladys has died and they will be going to her funeral instead. The Simpsons, along with Patty and Selma, drive to Littleneck Falls to attend her funeral and the reading of her will. On the video will, Great Aunt Gladys warns Patty and Selma not to die alone without a husband and children, as she did. Selma starts to worry that her biological clock may be ticking and decides she wants a child. Selma tries video dating but gets rejected by Groundskeeper Willie. She goes to a psychic who tries to sell her a love potion. The psychic ingests it, blurts out the innocuous ingredients and discovers that she accidentally drank a truth serum. Selma dates Hans Moleman after revoking his license at the DMV, and all goes well until the goodnight kiss. Selma envisions being the mother of several ugly and blind children that look like Moleman, prompting her to throw him out of her car and drive away. Lisa then suggests to Selma that she go through artificial insemination which Homer thinks is when a human has sex with a robot. After seeing Barney sell his sperm and several women carry out babies that look and belch like Barney, she leaves only with a sperm sample and a magazine about other sperm donors which she never uses.
When the day comes for Homer to take Bart and Lisa to Duff Gardens, he falls ill from food poisoning after eating a ten-foot hoagie from the nuclear plant picnic despite it having gone bad some time previously. Selma is chosen to take the kids to Duff Gardens while Homer stays home with Marge where they watch Yentl and the cheesy pseudo-porn The Erotic Adventures of Hercules starring Troy McClure as Hercules and Norman Fell as Zeus. Selma soon grows weary of caring for Bart and Lisa. Things get worse when Selma, Bart, and Lisa are on the Little Land of Duff ride and Bart dares Lisa to drink the toxic water from it. Lisa refuses, but is forced to by Selma after Bart mocks her. The water causes Lisa to hallucinate and become paranoid (she nearly attacks Selma with an oar after her shoulder transforms into a monster) and she wanders away from the ride. While Selma is looking for Lisa, Bart sneaks on a rollercoaster called The Barrel Roll and ends up having to be rescued after the car stops on a loop. While in the security office, one of the guards tells Selma that while park security was rescuing Bart, hoodlums (Dolph, Jimbo, and Kearney, even though they were shown arrested in one of the Duff Gardens commercials) stole three bumper cars. The guard adds that the George Washington robot from the Duff Hall of Presidents is badly malfunctioning after Bart pulled down its pants. Lisa is soon found swimming in the park's Fermentarium, returned to Selma and given pills by an unlicensed doctor for her condition. After her rough day with Bart and Lisa, Selma decides she can live without children for now and adopts Jub-Jub, Gladys' pet iguana who was originally willed to Marge's mother, Jackie.