Customer said "this is the first time in 10 years I have seen you smile"-said she "has known me" for 10 years. Came to the window snapping that we "always" ask her for ID for cigarettes. Told her we now just ask for DOB. Told her that "this is my face"-said I always "looked unhappy" to her. Told her I am a serious person. My face-my rules. I am not your entertainment.