Poor Justin Bieber. He wasn’t even at iHeartRadio Music Festival, but that did not stop Green Day frontman Billie Joe Armstrong from cussing the teenager out.

Here is what happened. Green Day was on stage in Las Vegas at the famous festival when they were given a one-minute warning to finish their set short of schedule. Supposedly, this was done to give Rihanna and Usher more time for their sets. Well, Bille Joe was not impressed and spiraled into a profanity-laden rant, on stage.

When Armstrong saw the warning, he stopped halfway through “Basket Case,” and flipped a bird to the camera. He smashed his guitar and rattled off:

“Oh, f*ck this sh*t. I’m gonna play a f*cking new song….Give me a f*cking break.” Armstrong continued, “One minute left. One minute f*cking left. You’re gonna give me one f*cking minute? Look at that f*cking sign right there: One minute. Let me f*cking tell you something, let me tell you something, I’ve been around since f*cking 198-f*cking-8. And you’re gonna give me one f*cking minute? You’ve gotta be f*cking kidding me! You’re f*cking kidding me. What the f*ck! I’m not f*cking Justin Bieber, you motherf*ckers…I got one minute—one minute left. It’s a f*cking joke. Oh, now I got nothing left. Let me show you what one f*cking minute f*cking means. One minute. God f*cking love you all. We’ll be back.”

LATEST UPDATE: BILLE JOE CHECKS INTO REHAB!

Watch Bille Joe Armstrong go off at iHeartRadio in the YouTube video below:

http://youtu.be/i3Xbs_v2yUE