The Black Sabbath star decided to retire from the music industry after one final gig with the band in his hometown of Birmingham, England in July but he died just weeks after taking to the stage.
His son Jack has revealed Ozzy told him he was going to chop off his hair to symbolise his retirement from rock.
During an appearance on Jamie Kennedy's Hate to Break It to Ya podcast, Jack said: "I think he was done ... We went to the Back To The Beginning gig and we hung around England for a few weeks.
"Right before I left, I was putting him (Ozzy) to bed and he was brushing his teeth and looking at himself in the mirror and he goes: 'I think I'm going to cut my hair off'.
"And I'm like: 'Why?' and he's like: 'I've retired. I'm not a rock star any more.' And so I think about that and I'm like yeah he was done. He was OK with his journey."
Jack went on to explain Ozzy had only ever cut his hair short once over the years - and he did it to annoy his wife Sharon.
He said: "He shaved his head once to piss my mum off .. Like '84 maybe. Nope (he never cut it short again)."
Ozzy's official cause of death was listed as cardiac arrest, with Parkinson's disease - with which he had been diagnosed in 2003 - recorded as a contributing factor in his passing.
Sharon and the couple's daughter Kelly Osbourne, 41, recently appeared at the 2026 BRIT Awards to accept a Lifetime Achievement award on Ozzy's behalf.
Speaking during the ceremony, Sharon said Ozzy would not have enjoyed the formalities.
She added: "I know that Ozzy is looking down on us all right now, and I know what he is thinking.
"He hated to make speeches. He hated listening to speeches. He'd be saying, 'Hey, missus, shut the f*** up!'
"But I'm not going to … He always wanted to do better, both personally and professionally.
"He never felt that words were enough to thank everybody for the life that he was given and for the life that he led. He may not be here but he left us one amazing body of work that will never be forgotten by the country that made him."
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