Initially who ever went to Lahore (  came home and we label them Lahure ). Most Nepali who went to India for job opportunity work as gatekeeper ( security) and every one's middle name were Bahadur, that is how they got the nick name or label.
We are not behind too, If we see a person with blackish skin and appears to be from Tarai we level them "marsiya" madhise. Specially people of Kathmadu love the word Marsia very much.

I guess we are even.