A slang term used by non pakistani's when around actual pakistanis to describe a Pakistani immigrant or descent. In the United Kingdom, it is a racist slur used against not only Pakistanis, but also those from other parts of South Asia. Its degree of offensiveness is similar to that of a non-African American calling an African American a "Nigger".
White man: Good morning Mr Punjabi, would you like you're daily newspaper
Jamraqi: Good morning, yes I would thank you, Good bye