I had a similar experience when I started working than asked the person why he was acting like Bihari in the land of Stephen curry , I started calling him Bihari directly which he could not report to corporate as Bihari meant nothing , I gave him a bloody Bihari time until he quit , they are all Biharis tell them they suck , sad for yr situation ,
Ps we all started calling him Bihari sooner or later than he quit , never seen again