the reason your joke isn't funny has nothing to do with "politically correct," a phrase you throw out in vitriolic attacks so mismatched with my gentle "can we not?"
you think that you're edgy and subversive and i am just sensitive. you think that you're some comedic rogue sticking it to censorship and "the man," which is ironic because every joke you make sits right within the lines drawn for you by a society that's been telling you w h a t t o t h i n k since day one, and actually by perpetuating the stereotypes and ideas already ingrained in our culture, you become the man, man.
you are not an artist, you do not create, you are not the revolution, and you can't fight the system when the system is you.