P.A. Sangma invited all his party members, friends and family for a party, after (mis)reading in the newspaper that Pranab Mukherjee had threatened to resign.
He immediately arranged for a celebration party and called all near and dear ones. But someone told him that it was Prabir Mukherjee (Kolkata pitch curator) who had threatened to resign, not Pranab Mukherjee.
Sangma had to call-up everyone all over again and apologise.