Bobby becomes the face of the school's campaign to win a radio contest to have the ska band perform at their prom. As the lie spirals, he drags Connie into the charade, introducing her as "Hamster Girl," a student with a vestigial tail. The Resolution
When asked about his growth, a student compares Bobby to "that kid on that old TV show," referencing Gary Coleman from Diff'rent Strokes . Kidney Boy and Hamster Girl: A Love Story - IMDb [S5E20] Kidney Boy and Hamster Girl: A Love Story
The truth comes out when the high schoolers attempt to prank middle schoolers attending their own dance with water balloons. Bobby stands up for Connie and eventually confesses that they are both middle schoolers. Despite the soaking and initial anger from the older students, they eventually grant Bobby a ticket to the high school prom because his "Kidney Boy" persona helped them win the No Doubt concert. The episode ends with the band dedicating a song to the "memory" of Kidney Boy after Bobby announces the persona is "gone forever". Bobby becomes the face of the school's campaign
Members of the band No Doubt (Gwen Stefani, Tom Dumont, Tony Kanal, and Adrian Young) voiced themselves. Kidney Boy and Hamster Girl: A Love Story