A man hailed a taxi in a large metropolitan area. When he got in, he told the taxi driver what the address was that he was going to, then he sat back and enjoyed a very calm, quiet, relaxing ride. about a block from his destination, the passenger tapped on the driver's shoulder to give him the fare and a rather large tip. The cab driver was so startled that he swerved left, just missed a head-on collision with a garbage truck, swerved back right, just missed a parked Lincoln Town Car, jumped the curb and stopped inches from a plate glass store-front. The man, suddenly upset and irate, yelled "what the HELL are you doing?!?" The taxi driver replied, "I'm sorry sir. This is my first day driving a taxi cab. I just spent 25 years driving a hearse."