Ozzy Osbourne found retirement "boring".
The heavy metal legend - who is currently on his 'Ozzfest' world tour - doesn't think he will stop rocking until the day he dies.
Speaking to Germany's FHM magazine, Ozzy, 61, said: "I tried that (retiring) and it was absolutely boring. You can't go and say, 'I'm retired now. That's it!'
"It won't take long and you're really gone for good and someone throws the last shovel of dirt on a coffin with your name on it. That's the moment you're really retiring - when you die."
However, the former Black Sabbath frontman - who is married to TV personality Sharon Osbourne - admits his current tour will be his last, as he no longer wants to be on the road for long periods of time.
He explained: "This is going to be my last tour. I don't want to be on the road for this long anymore. I have to stay in one place for a while, that's why we're taking a few breaks in between."