Fan Invited Onstage by Green Day Kills It on Guitar [VIDEO]

One Green Day fan lived out every fan’s dream when Billie Joe Armstrong invited him to join the band onstage during their show in Chicago at the legendary Aragon Ballroom.

The lucky guy jumped right up there, strapped on Armstrong’s guitar and broke into the opening riff for “When I Come Around.” He didn’t just stand there, either – he roamed the stage like a boss!