He's done that annoying man thing: I told him a bit of trivia last week. He's just told it to me and was surprised that I already knew.
Me: I told you that last week.
Him: No I read it somewhere.
Me: I told you. I was driving your car at the time and I was pulling onto the motorway. I remember it distinctly.
Him: No, I definitely read it somewhere.
I either record every single conversation I have with him or I kill him, not decided which yet.