John Lennon‘s son Sean Ono Lennon has gone on an online rant against Prince Harry, calling him an ‘idiot’ who deserves to be mocked.

Sean, 48, sparked fury among the royal’s fans when he posted a joke about his book Spare, writing: ‘My long awaited review of Prince Harry’s autobiography is two words. “Spare Me.”‘

While the musician insisted he was just making a pun out of the book’s title, he doubled down on his criticism of Harry as he was slammed on X, formerly known as Twitter.

As people pointed out that Sean and Harry have a lot in common, including the fact that both tragically lost famous parents at a young age, Sean recalled meeting princess Diana‘s younger son.

Sean replied: ‘Actually I am aware [that we have things in common]. We met once. That was before I realized he was an idiot.’

John Lennon ‘s son Sean Ono Lennon has gone on a savage online rant against Prince Harry , calling him an ‘idiot’ who deserves to be mocked

Sean seemed to particularly be offended by Harry sharing in his book that he treated his frostbitten penis – which he called his ‘todger’ – with his late mother’s favorite lip cream

The Oscar-winner seemed to particularly be offended by Harry sharing in his book that he treated his frostbitten penis – which he called his ‘todger’ – with his late mother’s favorite lip cream.

‘It was a pun,’ Sean said of his initially post. ‘But he deserves to be mocked after that todger episode. He’ll be fine.’

As social media users continued supporting Harry, mentioning the tragedies he has been through, Sean stood by his decision to mock the royal.

Sean said of Harry’s past: ‘That is very sad. I don’t hold any of that against him.

‘It’s the stupidity that bothers me.’

He added: ‘Just because I made a joke does not mean I don’t empathize with him. I do actually.

The Duke of Sussex’s controversial memoir became the UK’s fastest-selling non-fiction book ever

‘Also why I’m very disappointed with his outlook. I was hoping he’d be smarter.’

In another reply, Sean said: ‘I do empathize with him generally. But the way he whines and wangs on about things is really too much.

‘I’m just having a little fun. I think he’s earned some mockery. (I’m sure I have as well).’

Sean also replied to a Harry fan who defended him by suggesting that Sean was jealous of the Prince being a best-selling author

‘I mean, I don’t care but I did win an Oscar this year so…I think I’m doing okay,’ he said.

The artist seemed to have a good attitude about the backlash from Harry’s fans, concluding: ‘People are coming after me because I made a joke about the title of Harry’s book.

‘It’s pretty great.’

Sean won an Oscar in March for Best Animated Short Film for War Is Over! Inspired by the Music of John & Yoko.

Lennon co-wrote the film with director Dave Mullins.

It came after the Duke of Sussex’s controversial memoir became the UK’s fastest-selling non-fiction book ever after being published by Penguin Random House in January 2023.

Harry was understood to have clinched a $20million advance as part of a $40million four-book deal in June 2021 following a bidding war.

Sean won an Oscar in March for Best Animated Short Film for War Is Over! Inspired by the Music of John & Yoko

Sean is seen with his parents Yoko Ono and John Lennon

Yoko Ono and Sean Lennon stand beside the stamp design John Lennon stamp dedication ceremony in 2018 in New York

The 39-year-old royal’s headline-grabbing book saw him accuse his brother Prince William of pushing him into a dog bowl in a row over his wife Meghan Markle.

It also claimed William teased Harry about his panic attacks, that King Charles put his own interests above his second son and saw Harry reference taking cocaine, marijuana and psychedelic mushrooms and his enjoyment of the TV show Friends.

Harry used the tell-all book to make various claims about his family including that William called Meghan ‘difficult’, ‘rude’ and ‘abrasive’, and that Charles refused to allow Meghan to join Harry in Scotland as the late Queen was dying.