They are vulgar. Even rudeness can be done with elan, and they have none. Why, in early 70s, if memory serves, one of my fellow students at moscow university managed to emit what seemed to be a 20+ seconds long fart which he unmistakably modulated to be the opening of the soviet national anthem. Do not ask me how it was done, but I and couple of other witnesses became incapacitated by laughter. The important thing is that it IS possible, and why couldn't these vulgarians train for something similar?