Last Christmas Wham!
Justin Bieber has pranked his guitarist by fake firing him.
On Twitter he said that Dan Kanter had quit after a 'horrible' bust up between the two.
Dan replied 'Hey guys just wanted to inform all of the fans first that I have resigned from working with Justin and I will be deleting my Twitter soon.'
Justin replied: 'You will be missed @dankanter...but what you did was horrible. You will never be forgiven.'
Dan later said he had been pranked by Justin. He wrote 'Got pranked by JB. Guess I should cancel those auditions for @davematthewsbnd @phish @metallica and @bobdylan...and get Revenge'