 Depressed about his inability to keep up with the existing music scene when Bart reveals how uncool his interest in 1970 s rock music truly is, Homer decides to take Bart and Lisa to the Hullabalooza music festival to show them this isn t the case. Failing at that, he nearly sparks a riot and gets shot at with a cannon(ironically for Peter Frampton) which bounces a fake pig off his fat belly, and ends up being hired as part of the festival s freak show, touring with bands such as Smashing Pumpkins, Cypress Hill, Sonic Youth, and yes, Frampton.