Jason Derulo just fell down the stairs at Prince Charming’s ball! The unfortunate incident occurred just after midnight, when nobility and news agencies witnessed the embarrassing scene of Jason Derulo tumbling headfirst down the stairs at the main entrance to the prince’s palace. The cause of his fall appeared to be a shoe that a, likely drunk, partygoer left on the stairs. Prince Charming’s ball is an event intended to help the prince find a future bride, though he did not mingle with many of the attendees…