Bankura/Purulia: TMC supremo Mamata Banerjee's "slap" remark against Narendra Modi resonated in battleground West Bengal on Thursday, while she shot another barb at the prime minister, saying he will have to do a "100 squats holding his ears" if he failed to prove that her candidates were coal mafia.

The West Bengal chief minister bristled with anger at Modi's allegation at an election rally where he said TMC leaders were involved in illegal coal mining. She said she will withdraw party nominees from all the 42 Lok Sabha seats if even one was found involved in such activity.