Eddie Vedder and Jimmy Fallon 'Balls in Your Mouth'

Pearl Jam frontman joins host for 'Balls in Your Mouth'

Matthew Perpetua

Pearl Jam frontman Eddie Vedder became the latest iconic rock star to team up with Jimmy Fallon in a goofy musical bit on last night's episode of Late Night. In this skit, Fallon introduces a protest song he's written about the BP oil spill from last year, but as it goes along and Vedder joins in, the lyrics seem to take on a very different meaning.