Former Disney-star-turned-singer, Demi Lovato
, is currently serving as a judge on the X-Factor - along with Britney Spears
and Simon Cowell
. And as you know, after each contestant performs the judges get to rip into them. And normally the contestants simply stand there with their bottom lips trembling, before eventually leaving the stage with their tails between their legs.
Not this guy.
After being told that his performance ...