I am not sure how to respond to this sort of situation. So, here is the back story. My MIL and her boyfriend came to visit awhile back. While we were having dinner our DS1 was acting up a bit so my DH and I were correcting him when MIL BF chimed in and said something about behaving or the like. I really can't remember as it was awhile ago. What I do remember is being really put off that he would do that seeing as both of the parents were present and taking care of the situation. I don't feel it was his place to say anything at all since we were there. Well, they are coming for another visit tomorrow and I am sure it will happen again. My question is, if/when it happens again what should I do? I don't want to sound like a complete B about it but then again it isn't his place to say anything. I am not a confrontational person at all but I feel like if I keep it in again I could explode.
Any thoughts on what to say if it happens again? Thanks!