SIMON Cowell risked turning the air blue as he stopped one letter short of delivering a furious F-word rant on BGT.
The judge was left raging following the performance of comedian Alex Mitchell as he hit out at the performer's haters with a very telling comment.
Alex, who is neurodivergent, has used his comedy routines to highlight the struggles he has faced throughout his life.
The comedian has demonstrated his 'can do' attitude throughout his time on the ITV programme but confessed that comments about his differences have plagues him throughout his life.
Having been thoroughly impressed and moved by Alex and his time in the contest, head judge Simon was full of praise after his final performance.
It also led him to make a damning comment to any of Alex's haters.
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Aware that the show was still airing pre-watershed, Simon insisted that they should "duck off" - a comment which received rapturous applause from the crowd.
He said: "Alex - for all those people who have sent mean messages, tell them, the word rhymes with duck, off."
The potentially sweary moment appeared to leave show hosts Ant and Dec on edge as they swiftly moved away from the panel to chat to Alex in a bid to avoid any more of Simon's rant.
His slip-up is not the only blunder to have hit the grand final.
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Viewers were left perplexed when the show kicked off with Bruno Tonioli seemingly being booed.
Loud boos seemed to echo around the Hammersmith Apollo as the the judge stood up to speak.
Confused as to why the audience appeared to react savagely to the Italian dancer, fans flocked to X - formerly Twitter - to have their say.
Penning online, one fan said: "Why does everyone keep booing Bruno?"
Another echoed: "Why are the audience booing Bruno, WTF."
However, all was not as it seemed as the audience's reaction was the total opposite.
They were in fact loudly chanting his name to celebrate his arrival.
The cries of "Bruno! Bruno! Bruno!" appeared to correlate as boos on the live broadcast which sent viewers into a frenzy.
BGT's Best Golden Buzzer Moments
BGT have handed out many Golden Buzzer's over the years, can you remember some of the most famous
- Loren Allred - Loren Allred, 32, from Brooklyn, New York jetted to London to audition after recording the vocals for The Greatest Showman. The stunning singer got a standing ovation and a Golden Buzzer from the judges as she delivered a stirring rendition of Never Enough from the popular film. Loren came out on stage and revealed to the judges they would have heard her voice many times before that moment. "I was hired to record the vocals for The Greatest Showman as a guide for the actors to know how to sing the songs," she explained. Loren then revealed actress Rebecca Ferguson was so stunned by her singing that she decided to let her vocals be heard in the movie. "So she lip-synced," Loren said.
- Chicken Shed Theatre Company - Comprised of individuals aged between 5 and 37, the group was set up to welcome anyone irrespective of background to get up on stage and perform and fulfil their dream. Chicken Shed prides itself on accepting anyone and does not hold auditions to make the group a safe and inclusive space. The group wowed as they performed Wonder by Naughty Boy featuring Emeli Sande. It meant that Alesha wasted no time as she decided to hit her golden buzzer for the young performers. She told them it was her "honour" to reward their inclusiveness with her golden buzzer.
- The Dancing Granny - Granny Paddy Jones and her professional partner Niko Espinosa first hit headlines when they won the Spanish talent show Tú sí que vales in 2009, before going on to appear on Britain’s Got Talent in 2014 where they came ninth. Amanda Holden was so impressed with Paddy that she gave her the Golden Buzzer, which sent them straight through to the semi-finals. But things took a worrying turn when Paddy cracked a rib while rehearsing a new move and her place on the show was under doubt. She was given the all-clear to perform in the end but didn’t quite live up to expectations.
- Bars and Melody - They will forever be remembered for their anti-bullying song on the talent show. Bars and Melody were first seen on the 2014 series of Britain's Got Talent, getting shuttled into the semi-finals when Simon Cowell pressed his Golden Buzzer. They made it to the final thanks to a performance of I'll Be Missing You but lost out on the crown to Collabro. These days Charlie Lenehan - known as Melody - is covered in tattoos, with inkings on his neck, arms and chest. But he is as close as ever to co-star Leondre Devries - who is Bars - with the pair seen enjoying themselves in exotic locations all over the world.