Prince William and his wife Catherine
Britain's Prince William and his wife Catherine, Duchess of Cambridge stand on Centre Court after the men's singles quarter-final tennis match between Andy Murray and Grigor Dimitrov at the Wimbledon Tennis Championships, in London Reuters

English singer and lyricist, Morrissey or Moz has attacked Kate Middleton and Prince William during a concert at O2 arena in London. The legendary English singer used the word "United King Dumb" to describe the royal couple. The incident took place over the weekend at his sold out show in O2 arena.

Morrissey, the 80s lyricist and vocalist of the band "The Smiths," attacked the royal couple during the performance of the song "Meat Is Murder." He not only called the pregnant Duchess of Cambridge an "airhead" but addressed her sister Pippa Middleton by calling her a "thickwit," music website NME.com reports.

The pictures of Duchess Catherine and Prince William was photoshopped cleverly to be joined by a picture of the "Queen giving the finger." The entire royal family was shown in the same frame with graphic images of numerous animals in the slaughterhouse, says the website.

This is not the first time that Morrissey has attacked Kate and Prince William. The singer wrote a 2000 world blog criticising the Middleton sisters for hunting animals and posing glamorously with them.

"The sick face of modern Britain, Pippa Middleton will kill deer, boar, birds - any animal struggling to live, or that gets in her socialite way," writes Morrissey on his blog addressing Pippa's "kill, kill, kill mentality." The 55-year-old Lancashire-born singer then took a jibe at Prince Harry too and said he was worried that the future of his country Britain lies in their hands, says the website.

After bashing the royal family, the "Viva Hate" singer went on to blast his record label Harvest Records for the treatment of his recent album "World Peace is None of Your Business." The album was allegedly "immediately deleted by a very clever record label," said Morrissey, according to NME.

Morrissey made each band member of "The Smiths" wear "F*** Harvest Records" T-shirt - an obvious reference to his recent separation with his record label. The artist mostly belted out songs from his new album "World Peace Is None Of Your Business," which includes "Scandinavia," "Kiss Me A Lot," "Istanbul," "I'm Not A Man" and his finale song "Everyday Is Like Sunday."