This is one of the few rumors that's actually true. But Ozzy didn't bite the head off a bat on purpose-the whole thing was a gruesome accident. While on stage he was handed what he thought was a fake rubber bat and attempted to rip its top off. "Immediately, though, something felt wrong," he wrote in his 2009 memoirs. “Very wrong. For a start, my mouth was instantly full of this warm, gloopy liquid, with the worst aftertaste you could ever imagine. I could feel it staining my teeth and running down my chin. Then the head in my mouth twitched." Yikes.