tell me this kind stranger, what is it I do tip for? 'cause I've never figured this out, is the muffin supposed to land itself in my hand or is the plate suppos

tell me this kind stranger, what is it I do tip for? 'cause I've never figured this out, is the muffin supposed to land itself in my hand or is the plate supposed to walk itself from the cook to me. these are the basics of any restaurant. why should I have to pay 'extra' for this? and who decided 20% is the right tip amount for the right way to deliver your food to you. OTOH if it is optional then why frown when I decide to exercise my options. As I see it its just a way for restaurants to punt the responsibility of providing livable wages to workers and externalizing every nickle and dime to me the consumer. its just a way to put you on the spot and shame you into paying extra.