During the midst of a drug binge, Ozzy Osbourne once smeared the blood of a dismembered shark over the walls of a hotel room, according to one of his bandmates.
In his memoir, "Iron Man: My Journey through Heaven and Hell with Black Sabbath," Tony Iommi recalled several unimaginable touring moments with the "Prince of Darkness."

"With drugs, always you get bored, so you must do something to one another. Like Ozzy hauling a shark through a window, dismembering it and soaking our room in blood," Tony said, according to The Daily Star.
Tony — who co-founded Black Sabbath — didn't go into more detail but said Ozzy also once asked Black Sabbath drummer Bill Ward if he could "set him on fire" during another head-scratching moment. That moment, though, was more of a prank, Tony said.
Ozzy supposedly asked, "Bill, can I set fire to you?" Bill quipped, "Busy, so not just yet." A bit later, Bill proclaimed, "I'm going home now, so if you want, you can set fire to me."

Ozzy has been very open about his drug and alcohol addiction — he once estimated that he's been to rehab 10 times. He's reportedly been sober since 2013, a decision that came after he apparently took hallucinogenics and got into a tiff with a horse.
"I used to swallow handfuls of tabs at a time. The end of it came when we got back to England. I took 10 tabs of acid then went for a walk in a field. I ended up standing there talking to this horse for about an hour," he told The Daily Star. "In the end the horse turned round and told me to f*** off. That was it for me."