You fax machine!
Yesterday I was walking up to the post office and saw a guy on a bike, no problem, tons of bikers out yesterday including myself, later. He was going north on Maude in Sunnyvale, between Pastoria and Mary. He was on the right side of the street, but then crossed over to the other side, to ride on the wrong side, and he surprised a postal truck coming out of a small side street. He yelled at the postal truck, it sounded kind of like "You fax machine" but I think it was Fawk something, idiot.
Wrong way bikers are starting to really pizz me off, they're a danger to themselves, us, and the image of biking.