who says  bahuns dislike being called bahun?? They online dislike it when an adjective is added infront of a bahun..such as lovi bahun, chor bahun, pakhe bahun, ghusya bahun...ect...but personally being a bahun myself i am never offended or embarrased for being called one. I am not religious and eat beef but i am proud to be called a bahun by caste. 

Its rather different than being called Jyapoo..bhote...or a madhise .a Jyapoo is a derogotary word for a Newar....Bhote is a derogotary word for Mongloids and Madhise is a derogotary word for Madhesi ( note the difference between madhesi and madhise)