A lot of people are commenting that the kid is rude or should be spanked, but he’s 3 years old. It’s good that their mother will have a conversation (because that’s the reason I was so good at talking to adults as a child), but he is clearly too young to be having a rational conversation. She should have shut it down and put him in time out, and maybe increased the time in time out if he interrupted her. Spanking is not productive, it’s just easier for the parent. I was never spanked as a child and I know I was stubborn, but my parents wore me down. If I left my time-out spot, they put me right back. When I got older, they talked to me and made me understand why what I did was wrong. I never even needed to be grounded, because I respected what they had to say and assumed it was probably fair. I learned that punishments were not optional but I also knew my parents loved me and I wasn’t afraid of them or resentful of them. It was fair. It would have been easier and less time-consuming for them to just smack me, but they didn’t. The kids I know whose parents hit them mostly turned out okay, but there was a lot of fear and unhappiness growing up, and they respect their parents less and just hope they don’t get caught instead of actually learning the lesson. I knew one boy who rejected everything his parents stood for out of anger that they hit him so much. It’s usually counter-productive, unnecessary, and an easy way out for a lazy parent.