I wouldn't go so far as to call you a ******, but I generally tip about 10%. Less than for table service cause there is less work, but more than zero. The way I see it, if tips are shared then you are also giving a little to the kitchen guys that helped make the stuff, and if the waitress who did the order and brought it out was prompt and cheerful its just a nice way of saying "thanks" and recognizing you are taking him/her away from tables that are likely going ot be giving him/her more.