Ozzy Osbourne saw a dog at one of his concerts wearing a sign that read, ''Please don't eat me!''

The legendary hellraiser, who famously bit the head off a bat on stage in 1982, said there have been many surreal moments during this year's Black Sabbath reunion tour.

The 65-year-old musician told The Sun newspaper: ''At one of this year's gigs, somebody let a dog go with a sign on its leg saying, 'Please don't eat me!

Ozzy spoke about winding up his band mates, including bassist and chief Sabbath lyricist Geezer Butler.

He explained: ''Geezer is a vegetarian. When he walked off the stage, I said, 'Does your wife eat meat?'

''And he replies, 'Yeah'. So I said, 'What, do you have a funeral every time she has a bacon sandwich?''

Ozzy, who has been sober for nearly a year after relapsing into drink and drugs, said he's nearly injured himself on stage every night and is shocked by the band's massive success after releasing their monumental album '13' and being nominated for three Grammy Awards.

He said: ''Every night, I've slipped on the stage. I nearly fell in the f***ing orchestra pit.

''I mean it's tough on the other guys. When they're all getting serious, I make them laugh and they all get p***ed off. Nothing's rehearsed with me. One day, I'll just put a bucked on my head.''

He continued: ''Just when you think things might be winding up, it gets bigger than ever.

''Honestly I'm in shock. I keep thinking I'm the luckiest guy in the world. It's been a dream.''