Billie Joe Armstrong has resolved to give up drugs.

The Green Day star - who was arrested by police in January 2003 for drinking and driving after being pulled over for speeding - admits he now feels too old to cope with the effects of consuming illegal substances.

The 37-year-old rocker said: "What will I never do again? Methamphetamine. I'd rather be huffing gas than sticking speed up my nose.

"I can't do acid anymore, either. I would end up naked on top of the building, sucking my thumb and trying to find a happy place if I was ever to drop acid again."

Despite his vow, Billie Joe insists he isn't worried about getting older and is looking forward to turning 40 in a few years time.

He said: "I don't mind getting older. I wouldn't trade my future with anybody else's."