I've never gotten used to the 'etiquette smile' (I have different internal terms for it) and try to watch out for it as much as possible; I also appear to be ph

I've never gotten used to the 'etiquette smile' (I have different internal terms for it) and try to watch out for it as much as possible; I also appear to be physically incapable of expressing an emotion that I do not actually feel so there is no danger of me ever doing this to others. There is a certain shallowness that often accompanies it that often puts me on guard: the larger the smile, the tighter I grab my wallet and the quicker I wish to terminate the interaction.