Islamabad [Pakistan], March 3 (ANI): Pakistan Prime Minister-designate Shehbaz Sharif, in a slip of the tongue, referred himself as the ‘Leader of Opposition’ while addressing the National Assembly on Sunday, Geo News reported. The Pakistan Muslim League-Nawaz (PML-N) leader was elected as the 24th Prime Minister of the country amid the ruckus created by Sunni Ittehad Council (SIC) members. He is expected to take oath tomorrow, ARY News reported citing sources. President Arif Alvi will administer the oath to the newly elected Prime Minister in a ceremony held at the President’s House tomorrow …