A couple years back I was in math class and our teacher said something kinda disrespectful, and I had some kind of incredible retort. I wish I could remember what it was now, because it was one of those moments where you think back to a situation and think of a really clever response, but it happened RIGHT THERE
I said it really quietly, but loud enough for several of my classmates to hear. As soon as I said it I realized I shouldn't and I just kinda shut up, but the teacher knew I said something because a bunch of people laughed and did the general "ooohhhh" thing. I was all set because she didn't know, but one of my classmates decided she should know and told her and she was really really mad at me for like a month, but my teachers all love me no matter what and she got over it.