The show opens with a short parody of the Disney shortFeast entitled "Fat." Santa's Little Helper is fed scraps from the Simpsons' dinner table until he gets too fat and dies. He goes to Heaven and God offers him a choice between Fit Dog Heaven and Fat Dog Hell. Fat Dog Hell flashes a "Free Pizza" sign and Santa's Little Helper runs inside. Homer sees a commercial for a self-lifting chair and becomes interested in buying one, but the $1,100 price dismays him. After Lenny and Carl suggest that he try to raise the money through crowdfunding, Homer posts a video that persuades the residents of Springfield to donate. He soon has enough to buy the chair and posts a follow-up video of himself enjoying it, but the townspeople become so enraged upon seeing his frivolous use of their money that they storm the Simpson house and destroy the chair. Meanwhile, at Springfield Elementary, Lisa tries to attract potential members for the schoolmagic club. A girl named Harper Jambowski becomes interested in signing up, and the two begin to spend time together. Lisa tries to calm Homer's anger about losing the chair by asking him to take her and Harper to an Australian boy band concert, for which Harper's father Mike has already bought tickets. Homer agrees, but is surprised to discover that the group's seats are in an expensive VIP skybox. Mike, a wealthy entrepreneur and owner of several businesses and sports teams, joins them in the box, and he and Homer strike up a friendship of their own. On the way home, Lisa complains to Homer that Harper never let her talk during the show, but Homer persuades her to stay friends with Harper so she can enjoy all the luxuries of the Jambowskis' lifestyle. Harper invites Homer and Lisa to see a performance by David Copperfield, but again she stops Lisa from participating as the fathers enjoy themselves. As Lisa becomes disenchanted with Harper, Mike invites the Simpsons to spend a week on his private island. They decline at first due to the children needing to attend school, but Mike bribes Principal Skinner to close Springfield Elementary for a week so they can go. Harper gives Lisa a fancy new bicycle, but Lisa sees it as an insult to the one she owns and feels that Harper is trying to control everything around her. Although their argument escalates, Lisa decides to remain friends with Harper so that the family can enjoy the island's comforts. When the girls begin fighting again during the trip, Homer reluctantly takes the family home early for Lisa's sake, commenting that no one who would treat her so badly deserves to be her friend. During the credits, Homer ruefully says goodbye to the island's amenities as the family flies back to Springfield. Looking out the window, he and Lisa see that Bart is still on the island and has spelled out the message "So long suckers" on the shore.
Reception
"Friend With Benefit" scored a 1.5 rating and was watched by 3.48 million viewers, making the episode Fox's highest rated show of the night. Dennis Perkins of The A.V. Club gave the episode a B+ stating, "This season has seen the show rediscover how fruitful it can be to bring Lisa back down closer to her own age. Sure, she’s almost always the smartest person in the room, but here, as in the truly, restoratively excellent 'Halloween Of Horror,' that intelligence, when coupled with an eight-year-old’s emotional intellect, has freed up the show to make Lisa more vital than she’s been in a while. A lot of that has to do with Yeardley Smith’s performances, naturally. Even in the most indifferent of episodes, it’s evident how committed Smith is to her signature role, but when, as here, more care has been taken to establish Lisa’s character—and keep it consistent throughout—she can really make Lisa come alive...Here, she’s a smart, nerdy little kid who’s thrilled to have a new friend but also age-appropriately quick to recoil from injustice."
