‘Britain’s Got Talent’ viewers on social media are calling for judge Alesha Dixon to be kicked off the panel after she described one act on the show as “sexy chocolate men” on Wednesday night's semi-final.

The 37 year old singer, formerly of noughties girl group Mis-Teeq, made the remark while praising the opera group Vox Fortura after they gave a rendition of David Bowie’s ‘”Heroes”’. Four sexy chocolate men,” she said as they finished, “with amazing voices, polished to perfection. That was sensational.”

Immediately, irate fans took to Twitter to call for Dixon to make a public apology for the reference, while others demanded that she be fired from the show.

Alesha DixonAlesha Dixon's behaviour on Wednesday night's 'Britain's Got Talent' was criticised

“Only Alesha Dixon can getaway with saying four chocolate men on #BGT bet a white person wouldn't get away with that #racist would come into mind,” one angry fan wrote. “Another viewer continued: “Can't believe @AleshaOfficial just called them chocolate men would any other judge have gotten away with that #racism #BGT.”

“#BGT So @AleshaOfficial is disrespectful to one act and then says 'chocolate men'. Not great tonight. A public apology is needed! #BGT2016.”

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This referred to another incident on the same evening, when she was criticised for jumping in and pressing all of the other judges’ buzzers during another performance by Bespoke Candi. Seconds after the group had started, with Dixon having already said she wasn’t looking forward to it, three buzzers went off, Dixon having pressed Amanda Holden’s and David Walliams’ buttons as well as her own.

“She’s drinking again,” Holden joked, pretending that Dixon’s glass of water contained alcohol. Cowell joined in, taking a sip and spitting it out, saying that it was “tequila”.

It comes the day after the show’s co-host Declan Donnelly drew a storm of criticism after referring to girl group Zyrah Rose as “touchable” – after head judge Simon Cowell had described a performance of theirs as “untouchable” as he criticised their performance.

More: Simon Cowell says things get “very naughty” backstage at ‘Britain’s Got Talent’