Jimmy Kimmel roasted Robert Downey Jr’s manhood and past drug use in his bombshell opening monologue at the 2024 Oscars on Sunday – while also appearing to upset actress Emma Stone.

The host, 56, returning for the fourth time, left the A-listers grinning and cringing in equal measure as he took to the stage.

Downey Jr. 58, who is nominated for Best Supporting Actor for Oppenheimer was stony-faced as Kimmel made a crass joke at the start of the ceremony – referring to the reformed coke addict’s past addictions.

He said: ‘And Robert Downey Jr., one of the highest points of his career. But Robert has been’ – as RDJ pointed at his face, leading Kimmel to add: ‘Was that too on the nose or a drug motion you made?

‘But look at him, he’s so handsome, so talented, he’s won every award there is to win. Is that an acceptance speech in your pocket or do you just have a very rectangular penis?’

The joke fell flat as RDJ looked somber while staring at the camera while fans slammed Kimmel for his ‘bottom of the barrel’ jokes about substance abuse.

Later, Kimmel appeared to catch the ire of Emma Stone as he lampooned her performance in Poor Things, joking about the explicit sex scenes by saying: ‘Those were all the parts of Poor Things that we’re allowed to show on TV.’

The camera then cut to Stone making a less than impressed face, with some speculating she even called him a ‘p***k.’

Jimmy Kimmel roasted panned Madame Web, Barbie’s Oscars snubs and Robert Downey Jr’s manhood in his bombshell opening monologue on at the 2024 Oscars on Sunday

Downey Jr. 58, who is nominated for Best Supporting Actor for Oppenheimer was stony-faced as Kimmel made a crass joke at the start of the ceremony

John Cena appeared naked onstage to present Best Costume design in a cringe moment

Kimmel appeared to catch the ire of Emma Stone as he lampooned her performance in Poor Things, joking about the explicit sex scenes

Downey Jr. had previously spent time behind bars in 1999 after a long period of substance abuse which stifled his career.

He added: ’20 years ago, Robert played the villain, and correct me if I have this wrong, in a movie where Tim Allen turns into a dog, right? And if you ever decide to remake that film, I have just the guy to play Tim Allen.

The actor’s legal troubles began in 1996 when he was stopped for speeding and authorities found of heroin, cocaine and an unloaded .357 caliber Magnum. A year later, he skipped a court-ordered drug test and spent nearly four months in the Los Angeles County jail.

Following this, he then skipped another drug test and was sentenced to three years of prison in 1999. During this time, Downey Jr. served 15 months in state prison in Corcoran, California.

A few months after his release, he was arrested on Thanksgiving weekend for alleged cocaine and Valium possession and being under the influence of drugs.

The valium charge was eventually reduced to a misdemeanor, he pleaded no contest to the remaining charges and avoided more jail time.

In 2001, he was found walking bare foot around Culver City, Los Angeles, and was arrested on suspicion of being under the influence of drugs.

Following year of substance abuse, arrests, rehabs and relapse, Downey made a full recovery and has since gone on to achieve global recognition.

Downey later won the Best Supporting Actor Oscar for Oppenheimer.

Another cringeworthy moment saw a naked John Cena dragged onstage by Kimmel in a skit marking the 50th anniversary of the iconic Oscars streaker.

He said: ‘And Robert Downey Jr., one of the highest points of his career. But Robert has been’ – as RDJ pointed at his face, leading Kimmel to add: ‘Was that too on the nose or a drug motion you made?’

‘But look at him, he’s so handsome, so talented, he’s won every award there is to win. Is that an acceptance speech in your pocket or do you just have a very rectangular penis?’

The joke fell flat as RDJ looked somber while staring at the camera alongside wife Susan

Reformed cocaine addict Downey is pictured here in his mug shot taken at the California Department of Corrections to start his three year spell behind bars

Fans slammed Kimmel for his ‘awful’ jokes about RDJ

Kimmel said ‘At the 46th Academy Awards in 1974, David Iven was introducing Elizabeth Taylor when a nude man, a streaker, ran across the stage, which — can you imagine if a nude man ran across the stage today? I

‘I said, can you imagine if — a nude man ran across the stage today? Wouldn’t that be crazy?

Cena backstage then said: ‘Psst! Psst, Jimmy! Come here.

Kimmel said: ‘I can’t come there — do the thing! Excuse me for a second. What’s going on? You’re supposed to run across the stage’ as Cena said: ‘Yeah, I — changed my mind. I don’t want to do the streaker bit.’

‘I just don’t feel right about it. It’s an elegant event, you know, you should feel shame right now for suggesting such a tasteless…

Kimmel said: ‘You wrestle naked, why not?’ as Cena said: ‘I don’t wrestle naked, I wrestle in jorts.’

Cena said: ‘Costumes — they are so important. Maybe the most important thing there is. I — I can’t open the envelope. Can anybody help me?

Cena showed off his sculpted physique as he walked onstage nude

He later donned some Grecian-inspired robes

Cena bared all onstage as he presented Costume Design

Cena didn’t want to come out during the cheeky skit

As well as fans, Kimmel’s hosting also irked former President Donald Trump who took to Truth Social to write: ‘Has there EVER been a WORSE HOST than Jimmy Kimmel at The Oscars. His opening was that of a less than average person trying too hard to be something which he is not, and never can be.

‘Get rid of Kimmel and perhaps replace him with another washed up, but cheap, ABC “talent,” George Slopanopoulos. He would make everybody on stage look bigger, stronger, and more glamorous.

‘Also a really bad politically correct show tonight, and for years – Disjointed, boring, and very unfair. Why don’t they just give the Oscars to those that deserve them. Maybe that way their audience and TV ratings will come back from the depths. MAKE AMERICA GREAT AGAIN!’

Kimmel made light of the dig by reading out the message and saying: ‘Thank you President Trump. Thank you for watching. I’m surprised you’re still ah…isn’t it past your jail time?’

Kimmel also took a swipe at box office bomb Madame Web starring Dakota Johnson as he said: ‘The show, as you know, is starting an hour early this year, but don’t worry, it will still end very, very late. In fact, we’re already five minutes over and I am not joking.

As well as fans, Kimmel’s hosting also irked former President Donald Trump who took to Truth Social to write: ‘Has there EVER been a WORSE HOST than Jimmy Kimmel at The Oscars. His opening was that of a less than average person trying too hard to be something which he is not, and never can be’

‘I’m not going to lie, it’s going to be a long night, after what was a long year. It was a hard year, but it was also a great year for movies, despite the fact that everything stopped. The people in this room somehow managed to come up with so many excellent films and memorable performances, this night is full of enormous talent, and untold potential.

‘But so was Madame Web, but who knows. Are we off to a bumpy start in this is a meaningful occasion. This is something you dreamed about as a kid. And now, here we are, all dressed up, celebrating the best of the best, beginning with the biggest movie of the year, Barbie.

Shifting the focus to Barbie’s notable snubs in the Best Actress and director category for Margot Robbie and Greta Gerwig, he said: ‘Barbie was a monster hit. What a thing. What an achievement to take a plastic doll nobody even liked anymore, I mean, my wife, before this movie, you would had a better chance getting my wife to buy my daughter a pack of Marlboro Reds than a Barbie doll.

‘Now Barbie is a feminist icon, thanks to Greta Gerwig, who many believed deserved to nominated for best director tonight.