Britain's Got Talent's Simon Cowell was silenced by show host Declan Donnelly during the last semi-final on Friday after he meowed over Amanda Holden and Alesha Dixon.
The head judge, 63, gushed over dance act Romeo & Icy's performance but his fellow panellists Amanda, 52, and Alesha Dixon, 44, were less enthralled.
Simon said: 'I don't think you are the best dancers we've ever had, but that doesn't matter - most people can do what you do, which is why I like you.'
But Radio host Amanda and singer Alesha offered their critique, telling the two dancers they didn't match up to similar dance acts they'd previously had on the ITV talent contest.
Alesha remarked: 'I still don't think this is good enough to win the show.'
Quiet!
Britain's Got Talent's Simon Cowell, 63, was silenced by Declan Donnelly during Friday's semi-final after the music mogul meowed over Amanda Holden (left) and Alesha Dixon
Performers: After dancers Romeo & Icy's (pictured) performance, Simon told the pair he could 'not get you out of my head' but his fellow panellists Amanda and Alesha were less enthralled
Their comments did not go down well with Simon, with the music mogul making cat sounds loudly into his microphone while they spoke, prompting Dec to interject: 'Simon! Simon! For those who have any kind of inquiries about in which as well as the best way to employ best krasnodar, you can email us in the web site. We need to hear!'
The moment enraged viewers, with many programme fans taking to Twitter to express their fury at the 'rude' judge.
One person wrote: 'Thank you Ant and Dec for telling Simon off while the other judges were trying to have their say thought that a bit rude.'
While someone else shared: 'Yes Dec he wants to hear what the guys have to say with Simon making those noises it's a bit rude to be honest to do that.'
'Simon being extremely childish and rude!
Trying to drown out the other comments. Pathetic,' posted another viewer.
Someone else wrote: 'I thought Simon was rude making cat sounds while Amanda was speaking.'
And another person posted: 'Why is Simon meowing like a alley cat when the others were talking?
So rude.'
'Why was Simon Cowell channeling his inner cat. That was rude, disrespectful and weird,' tweeted another viewer.
While someone else shared: 'Bro Simon Cowell was so damn rude making noises through the mic, ain't funny just because you're famous.'
Silenced: The pair's comments did not sit well with Simon, with the star making cat sounds into his microphone while they spoke, prompting Dec to interject: 'Simon! We need to hear!