Washington, Dec 16 : Sir Elton John has blasted reality show `X Factor', insisting that he would rather lose his genitals than watch it.

The `Rocket Man' is due to perform a concert in London on New Year''s Eve - with the 2008 X Factor winner Alexandra Burke also lined up to appear at the gig.

But he has risked sparking a row with organisers by blasting the TV show, in which contestants battle for a record contract by singing their own versions of classic songs in a weekly knock-out competition, reports Contactmusic.

During a show at London''s O2 Arena on Saturday, John said he would rather have his "c**k bitten off by an Alsatian (dog)" than watch the show.

"My balls too," he added.

This is not the first time the singer has slammed the programme.

In 2006, he told a journalist: "The X Factor is a cruise ship show. I''ve got nothing against the people who go on - good luck to them. But I hate how they''re treated." (ANI)