A colloquial Hindi slang(also used as a loan word in English) which typically refers to a person who continuously and shamelessly brags and lies about things/deeds far beyond his capacity.
Mainly used as an instrument of mockery/ridicule to expose the Indian Right Wing leader(s) who commonly lie /brag by fudging development statistics in their governments.
> FICCI meet me Narendra Modi ne itni besharmi se jhooth bola ki uski media bhi use Twitter me Feku naam milne se bacha nahi payi
> (Narendra Modi lied so shamelessly at the FICCI meet that even his lapdog media couldn't stop him being christened Feku on Twitter)
> Agar koi RSS wala gujarat ke bare me kahe, usse puchna woh APCO paid Feku dalal hain kya !!
> (If a RSS guy brags about Gujarat, ask him if he is another Feku APCO paid pimp)