One is enough : Enjoy
Bengali
One Bengali = poet.
Two Bengalis = a film society.
Three Bengalis = political party.
Four Bengalis = two political parties.
More than four Bengali's = Countrywide agitation to bring Ganguli into Team .
Bihari
One Bihari = Laloo Prasad Yadav.
Two Biharis = booth-capturing squad.
Three Biharis = caste killing.
Four Biharis = entire literate population of Patna .
Punjabi
One Punjabi =100 kg hulk named Pinky.
Two Punjabis = Pinky with his bigger brother Twinky.
Three Punjabis = assault on the McAloo Tikkis at the local McDonalds.
Four Punjabis = combined IQ equal to one.
UP Bhaiyya
One UP bhaiyya = a milkman.
Two UP bhaiyyas = halwai shop.
Three UP bhaiyyas = a fist-fight in the UP assembly.
Four UP bhaiyyas = mosque-destruction squad.
Gujju
One Gujju = share-broker in a Bombay train.
Two Gujjus = rummy game in a Bombay train.
Three Gujjus = Bombay 's noisiest restaurant.
Four Gujjus = stock market scam.
Andhraite
One Andhraite = chili farmer.
Two Andhraites = software company in New Jersey .
Three Andhraites = Naxalite outfit.
Four Andhraites = song-and-dance number in a Telugu movie.
Kashmiri
One Kashmiri = carpet salesman.
Two Kashmiris = carpet factory.
Three Kashmiris = terrorist outfit.
Four Kashmiris = shoot-at-sight order.
Tamil-Brahmin
One Tam-Brahm = priest at the Vardarajaperumal temple.
Two Tam-Brahms = Maths tuition class.
Three Tam-Brahms = Queue outside the U.S consulate at 4 a.m.
Four Tam-Brahms = Thyagaraja music festival in Santa Clara
Mumbaikar
One Mumbaikar = footpath vada-pav stall.
Two Mumbaikars= film studio.
Three Mumbaikars = slum.
Four Mumbaikars = The number of people standing on your foot in the train at rush hour.
Sindhi
One Sindhi = currency racket.
Two Sindhis = papad factory.
Three Sindhis = duplicate goods shop in Ulhasnagar .
Four Sindhis = Hong Kong Retail Traders Association.
Marwari
One Marwari = The neighbourhood foodstuffs adulterator.
Two Marwaris = 50% of Calcutta
Three Marwaris = Finish off all Gujaratis & Sindhis.
Four Marwaris = Threaten the Jews as a community.
Haryanvi
One Haryanavi = tube light
Two Haryanavi = agriculture
Three Haryannavi= Lathi squad
Four Haryanavi = actually just one was enough
One Mallu = coconut stall.
Two Mallus = a boat race.
Three Mallus = Gulf job racket.
Four Mallus = oil slick.