Bengal's ruling Trinamool Congress, not on the same page as the Congress for a long while, has ripped into Prime Minister Narendra Modi over his "Didi O Didi" jibe and questioned why there should be a double standard in law. If the Surat court's judgment for Rahul Gandhi -- a two-year-jail term in a criminal defamation case over PM Modi's surname -- be taken as precedent, BJP leaders including the state's Leader of the Opposition Suvendu Adhikari and the Prime Minister can also be sued, sentenced and disqualified, the party said.