Sharon Osbourne failed all her school exams even after cheating.
The former X Factor judge confessed to pulling every trick in the book to get the answers to tests set by teachers.
She even did a deal with the pupil in front of her desk to write answers on the back of his blazer. Sharon, 67, said it did her no good and she still failed.
But she had the last laugh by becoming one of the wealthiest showbiz couples beside her husband Ozzy, 71.
Sharon, who went to school near her childhood home in Brixton, South London in the 1960s, made the confession on US chat show The Talk.
She giggled as she recalled: “I would write answers on arms, hands and legs.
“And then the guy that would sit in front of me would let me write on his back of his blazer.
“I never did one academic exam that I wasn’t cheating in.
“But I still failed. I still failed everything.”
Meanwhile Ozzy struggled at school in Aston, Birmingham, with dyslexia and quit lessons at 15 to work on a building site.
Sharon is worth almost £200million and with her Black Sabbath rocker husband has generated revenue around three times that.