Kashmir: It's a famous yesteryear song from a film set in Kashmir. Recently one of our TN MPs sung this song in Lok/Rajya sabha and became laughing stock of the country.
Rajasthan: Sowcarpet is an area in Chennai heavily populated by Rajasthani ppl so...
North-east: China kaaran means guy from China, the usual racist things used to refer to NE ppl anywhere in India. Watchmen means, we have seen most working as Goorkhas/watchmen for building so.
Gujarat: Gujarat: Vepery is an area in Chennai where I guess many Gujjus stay? (not sure)
>> Bepari means trader in Gujju lingo.
Mumbai: Famous dialog from Baasha(blockbuster hit Rajini movie, watch it if u havent its brilliant) where Rajini was a DON in Mumbai, then settles to a peaceful li(f)e in Chennai. His brother says this dialog to him which means "What were you doing in Bombay?" It's a very iconic dialog(I dunno why though)
WB: No idea wat beeda boys means, maybe most bengali ppl we know chew pan parak and spit it out? (Not sure)
Goltis: Te+lu+gu when read in reverse = gulute. That eventually mutated into gulti, and finally, golti. AFAIK it was just used to refer to telugu ppl without actually saying 'telugu' so that they dont notice. i guess even now its used in the same way.
Sarrakkuuu: How liquor is referred to in Tamil. You know Pondicherry-liqour-party connection
Goa: North indian version of Pondicherry
Kerala: famous Mallu porn. no idea their bajji sucks???
Tamilnadu: Our country(actually means place) dawww