Addressing a function at the launch of a music video here, Sinha, without naming anybody, said "Wey log Mann ki Baat karte hain, par mein Dil ki Baat karta hoon (They indulge in 'Mann ki Baat', but I do 'Dil ki Baat')," the BJP Lok Sabha MP from Patna Sahib said.
Sinha's terse remark came in the wake of the party sidelining him in the recent Bihar elections.
Earlier, the Yuva BJP had put up a poster outside the venue seeking action against Sinha and to "khamosh" (silence) him for criticising the party leadership.
The poster was put up by Suraj Pandey, spokesman of the BJP Yuva Morcha, Patna unit, and Anil Sahni, general secretary, Vishwavidyalaya Mandal, which also said, "After Kirti Azad (Darbhanga MP), it is now Shatrughan's turn."
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When reporters sought Sinha's comments on the poster, he said "In politics one gets bouquets as well brickbats."
When asked about the poster against Sinha, Bihar BJP president Mangal Pandey said it was not official.
"Somebody might have expressed his feelings against Sinha.
The central leadership will take care of issues raised by the BJP," Pandey added.