What are the stereotypes shared among members of different provinces in Pakistan about each other?

There are both type of people, with positive thought as well negative thought, Few people I hv seen they very rarely people appreciate the other community, I give you an example, here the sindhi ladies work at house as maids so they thing stamp on them, this is so negative point of view thats their work and that how they learn bread and butter, but people think that ruining the name of Pakistan, There in Pakistan, all the maids or drivers work whether they are sindhi punjabi or siraiki. well not all the cases are like that. But living abroad tell you the difference among them. I found them all very sweet and lovable, I think thats because of our strong values n morals we have as Pakistanis
And there is thought related to Punajbis that they are VERY loud people and they loudness is not liked by karachiites :D Well I dun agree, every province has it's own taste and values. yes Punjabis are loud but they are also consider to be "khulay dil walay" as they say Lahore is the heart of Pakistan. LOL
I have been lucky in this regard that since my school days I had friends who belong to different provinces, they were sindhi, saraiki and pathan, I have also learn a bit of their regional languages. And I love to have them, they have told me about their cultures and food, it's actually amazing to know abt different people from these provinces. The Blochis are the sweetest one, I had a class mate back in 9th class, so simple and humble.
Still at the other side, I think We need "unity" as Pakistanis, we lack there badly. "Give and gain respect" : )

I think we all are brothers n we all are one

I hate these stereotyping thing and I am glad that most of the people are against it now. I remember a time, not long time back when my grandmother used to say that no one from our family will marry in Punjabis but last year she corrected herself and said that there is no difference in Punjabis or Muhajirs,' We are all same':) and I honestly believe in these four words.

In the spirit of the actual question ... There was a saying once common in Sindh in past: Saamp aur Punjabi jahan dekho, foran maar dow! (Wherever you see a snake or a Punjabi, kill it (him) then and there!) :-)

Disclaimer: This is ONLY a straight forward response to a straight forward question; no pun (politics) intended.