The rock star rant of Billie Joe Armstrong Saturday night has been followed up with a rock star trip to rehab
. After dropping an f bomb laced speech at the iHeartRadio concert Saturday night which included shots at Justin Bieber and Ryan Seacrest's hair (on the inside), the singer of Green Day has entered rehab to seek help for his addiction the song “Baby,” and substance abuse issues. The band apologized for Billie's outburst, but wanted to remind everyone they have a new album that comes out on Tuesday with others to follow two months apart. Get well Billie.