Ahead of the 4th phase of polling in Bengal, a political slugfest has erupted between TMC and BJP over PM Modi's Didi-o-Didi remarks during rallies. TMC accused the PM of showing disrespect to Mamata Banerjee by way of his mocking tone of addressing her at the election. PM Modi added a more word Adarniya and said Adarniya Didi o Didi, now again Mamata Banerjee shows her anger over PM Modi's Jibe. Watch Shankhnad.