'Are you f****** kidding me?' Simon Cowell is jeered by live X Factor audience as he bemoans having to mentor the over-25s
He is playfully known as Mr Nasty.
But Simon Cowell's reputation appeared to hit a momentary new low for viewers of Saturday's X Factor, which saw the judges assigned their contestant groups.
The 55 year-old music mogul was jeered by the crowd at London's Wembley Arena after failing to disguise his disdain for getting the over-25s.
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Not happy: Simon Cowell's reputation hit a new low for viewers of Saturday's X Factor, when he swore in anger at being given the over-25s contestant group
The gaffe - bleeped out by ITV bosses - came as co-hosts Olly Murs and Caroline Flack revealed the public decision on who should get what's considered the competition's trickiest category.
As they announced that Simon would oversee their performances he scrunched up his face and swore, shouting 'f***'.
Adding insult to injury, he then stormed over to the presenting duo and demanding to see the printed results on their prompt cards.
See the latest X Factor UK news on Simon Cowell and the other judges
Furious: The gaffe came as co-hosts Olly Murs and Caroline Flack revealed the public's decision on who should be given what's largely considered the competition's trickiest category
Not smooth: As they announced that Simon was to oversee their performances - which are known for being hard to market - he swore, shouting 'f***'
When they confirmed his fears he looked visibly annoyed, saying to the audience: 'Thanks a lot, everyone' - which caused a sea of boos.
Not least because the over-25s watched the outburst live, leaving them feeling royally rejected.
Clearly fuming at the result, some Twitter users hinted that it was a karmic response to him always giving the category to former co-star Louis Walsh.
Offended: Adding insult to injury, the over-25s watched the outburst live, leaving them feeling royally rejected
Shock: Rita and Cheryl were stunned by the outburst, which was beeped out by ITV
One posted a message which simply said: 'Simon, you don't seem to be loving it now you have the overs? #spoketoosoon'.
Moments before the reveal Simon's fellow judges - Cheryl Fernandez-Versini, Rita Ora and Nick Grimshaw - had all stated their desire to have the girls, the boys or the groups.
And, naturally, they got their wish. Rita was given charge of the girls, while Nick will be pushing the boy power as Cheryl go-gos the groups.
What goes around? Some Twitter users hinted that it was a karmic response to him always giving the category to former co-star Louis Walsh
The big moment: The judges all line up as their groups - decided by the public - are announced
Hard times: The cut-throat talent show saw the female contestants whittled down to just six
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