One Bengali is a poet
Two Bengalis is a film society
Three Bengalis is a political party
Four Bengalis is two political parties

One Punjabi is a 100 kg hulk named Pinky
Two Punjabis is a Pinky with his brother Twinky
Three Punjabis is an assault on the McAloo Tikkis at the local
McDonalds
Four Punjabis is a combined IQ equal to one Tamil-Brahmn

One Bihari is Laloo Prasad Yadav
Two Biharis is a booth-capturing squad
Three Biharis is a caste killing
Four Biharis is the entire literate population of Patna

One Mallu is a coconut stall
Two Mallus is a boat race
Three Mallus is a Gulf job racket
Four Mallus is an oil slick

One UP bhaiyya is a milkman
Two UP bhaiyyas is a halwai shop
Three UP bhaiyyas is a fist-fight in the UP assembly
Four UP bhaiyyas is a mosque-destruction squad

One Gujju is a share-broker in a Bombay train
Two Gujjus is a rummy game in a Bombay train
Three Gujjus is a Rs. 10-crore sprocket manufacturing business
Four Gujjus is an all-night dandia-raas session

One Andhraite is a chilli farmer
Two Andhraites is a software company in New Jersey
Three Andhraites is a Naxalite outfit
Four Andhraites is a song-and-dance number in a Telugu movie

One Kashmiri is a carpet salesman
Two Kashmiris is a carpet factory
Three Kashmiris is a terrorist outfit
Four Kashmiris is a shoot-at-sight order

One Tamil-Brahmn is a priest at the Varadarajaperumal temple
Two Tamil-Brahmns is a maths tuition class
Three Tamil-Brahmns is a queue outside the U.S. consulate at 4 a.m.
Four Tamil-Brahmns is a Thyagaraja music festival in Santa Clara

One Bombayite is a footpath vada-pau stall
Two Bombayites is a film studio
Three Bombayites is a slum
Four Bombayites is the number of people standing on your foot in the
train at rush hour

One Sindhi is a currency racket
Two Sindhis is a papad factory
Three Sindhis is a duplicate goods shop
Four Sindhis is the Hong Kong Retail Traders Association

One U.S. Desi is a software guy
Two U.S. Desis is a lunch group at work
Three U.S. Desis is a bitching session about the U.S.
Four U.S. Desis is four software guys, heating tamarind rice in the
office microwave, cooked that morning, in their shared one bedroom
apartment, and bitching about life in the U.S.