I remember when my DD was 13. She was quite the social butterfly and would make all kinds of lovely plans with her friends. When reality hit and we would say NO, she would get quite a 'smart mouth' at times. She would sometimes be very upset, because her heart was set on seeing her friends, not with being home with her boring ol parents. Sometimes it hurt my feelings, but not too often. But if I had not seen her in months, and had to fight in court to see her, and took a week off to spend time with her, and she wanted to immediately get dropped off at her friends house the first night, I would be hurt and angry, most likely.
I think there is a possibility that a 13 yr old had a 'smart mouth' and said some obnoxious 13 yr old things, and it is possible that he said those snotty things to a man who was stressed out, angry and resentful, and things went sideways fast. jmo