McBurney is the Disablity Resource Center at the University of Wisconsin. Around that campus area of Madison, WI, you may hear people use the word McBurney as a noun, adjective, or even a verb. It is used in the context of someone being or acting or doing something retarded, stupid, illogical, irresponsible, or queer.
Joe: "I fucked up last night, I totally fucked a fat and hairy chick last night."
Mike: "You are such a McBurney."