Nope it's not a song title and no not ALL of Green Day is going to rehab but the front man is. Billie Joe Armstrong was showing pretty clear signs of coming undone during a performance at iHeartRadio Music Festival held in Las Vegas on September 21st.

The statement on GreenDay's website reads:

"Billie Joe is seeking treatment for substance abuse. We would like everyone to know that our set was not cut short by Clear Channel and to apologize to those we offended at the iHeartRadio Festival in Las Vegas."

All upcoming tour dates and promotional appearances for the band have been postponed  - unfortunate timing as they are releasing their new album iUno! tomorrow - September 24th.

*** Warning this video has ALOT of swear words in it...specifically F*CK...so...kiddies...this one ain't for you.