RJD chief Lalu Prasad on Sunday coined a Hinglish term - " fargi-cal strike", meaning fake (fargi) action - to parody what Prime Minister Narendra Modi's supporters have been dubbing as a "surgical" strike against black money: The demonetisation of Rs 1,000 and Rs 500 notes.

In his first reaction after the Prime Minister announced the radical move on November 8, Lalu tweeted in Hindi on Sunday: "Modi must assure the nation that the people would get the promised Rs 15 to Rs 20 lakh in their bank account after Modi is over with the 50 days of his deadline for ending corruption. If the people fail to get the promised amount in their bank accounts it would mean that Modi's action was a fargi-cal strike".

Bengal chief minister Mamata Banerjee, who has been vocal in her opposition against the Centre's move, called up Lalu soliciting his participation in a delegation she will lead to President Pranab Mukherjee on November 16 and 17 against the Prime Minister's decision.

Trinamul sources said Mamata was trying to "champion the cause of common people" and "build a national consensus" against the Modi government's move.

Sources close to Lalu revealed that he promised to send his party's representative as part of the delegation to the President.

Lalu, in a series of tweets after talking to Mamata, said, "We are opposed to black money. But the Prime Minister's handling of the issue completely lacked the vision for implementation. He should have taken care of common people's convenience".

He said if Modi failed to ensure Rs 15 lakh to Rs 20 lakh in each citizen's account it would amount to "fake encounter" of the people.

Lalu also asked if the central government would release the statistics of how many people died for want of food and medicine after demonetisation: "Modi should explain why allowed the Rs 2,000 currency note when he demonetised the Rs 500 and Rs 1,000 notes."

He said the cash crunch had increased the misery of the poor people. "While the poor people are in the queues at the ATMs and banks, the rich ones are enjoying the comforts in five-star hotels."

Lalu's stance is diametrically opposite of his alliance partners, chief Minister Nitish Kumar's JDU and the Congress, who have supported demonetisation.

"People may face some problems for some time, but in the long run the people will benefit as the economy of the country will be strengthened," Nitish had said on November 9.