The act of one being rude in a manner or doing something stupid and obnoxious or "fat". This term can describe someone who is actually skinny or well managed. The person being accused of "Being obese" usually tends to do stupid stuff a lot and has a history of being obese.
person 1: Did you break my headset?
person 2: Yeah, why?
person 1: Stop being obese man you break everything.