Friendly banter between Debroy, Bhalla over photo mix-up

A picture mix-up by a news channel today led to a friendly banter between the Economic Advisory Council to the Prime Minister (EAC-PM) Chairman Bibek Debroy and one of its members Surjit Bhalla.
It all started with an English business news channel putting up Debroy's picture in a programme notification, but captioning him as Bhalla.
Someone in Debroy's office quickly noticed the goof-up and pointed it out to the channel, tagging his boss Debroy.
Debroy responded with a tweet tagging Bhalla: "@surjitbhalla What are you up to? Don't pretend to be me. Because I won't be able to reciprocate."
Bhalla replied with "LOL!", an acronym for laughing out loud.