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.
(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)
Made popular as a twitter hashtag and is now used to refer to him and his pronouncements (sometimes even on Television). His supporters known as Sanghis, inspired by him have a similar penchant for even greater levels of braggadocio for e.g. Petrol will be available for Rs. 10 a litre once Feku comes to power.
Feku says that all the Okra eaten in Europe comes from his state.