Black Sabbath rocker Ozzy Osbourne's sex drive has been ruined by his near-fatal quad bike accident in 2003, because he has been prescribed anti-depressants ever since. The former hellraiser is trying to change his medication in a bid to reinvigorate his loins, but his wife Sharon Osbourne is quite happy to leave their bedroom antics behind. She says, "It's totally ruined his sex drive. He's always been very highly sexed so he is in the middle of changing medications. (And) I'm always too tired."