Both of my teenage children will contradict me when I'm talking to my friends. I am not sure why they do it or what they gain from it. If I was lying or exaggerating I wouldn't mind but it's when I'm recalling a true story and they butt in with things like "no that never happened" and make me look like a complete liar. I wonder if it's because they remember things differently or they like trying to make me look silly. Other than that I don't particularly have any problems with them. My husband says I shouldn't worry about it and to just laugh it off. I'd just be interested to know if it happens to anyone else?