Liz Truss today delivered one of the most ‘bizarre’ resignation speeches in British political history as the ‘drained’ and Pragmatic Play Slot ‘pallid’ Prime Minister feigned a ‘sickly smile’ to mask her true emotions after weeks of public fury, a body language expert has told MailOnline.  Ms Truss is set to become the shortest serving Prime Minister in history after a chaotic 44 days in office – during which she lost the confidence of Tory MPs and the public, battled and lost an open revolt from Conservatives demanding her departure and oversaw economic turbulence. Speaking from a lectern in Downing Street, she said she had told the King she was resigning as…