In 2011, the Black Sabbath singer, and his wife Sharon, were hit with $1.7 million in tax debts from 2008 and 2009. Ozzy and Sharon paid off the sum a week after learning about it and owned up to their mistake.
"You have to be on top of your own business affairs," Mama Osbourne tweeted. "You can't rely on anyone but yourself. My fault...lesson learned."