Green Day’s Billie Joe Armstrong in Rehab after Epic ‘Bieber’ Meltdown

Published:3:23 pm EDT, September 23, 2012| Updated:3:48 pm EDT, September 23, 2012|

Green Day frontman Billie Joe Armstrong is entering rehab after a nuclear-level meltdown on-stage at the iHeart Radio Music Festival in Vegas.

He freaked out when he felt the band's time was cut short, screamed "I'm not f**kin' Justin Bieber, you motherf**kers!" and smashed a guitar (watch above).

It was pretty awesome, but of course we're sorry to hear it stemmed from a substance problem.

Green Day has an album coming out on Tuesday, called Uno. As in "Uno F**kin' Minute!?!?"

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