Sure, I'll bite.
Do not attempt to tell me "what I'm thinking"
I'm not going to pretend that my way of thinking is "unique" because I can't speak for how others think, but I expect that same courtesy to apply to me as well. For example, whenever someone says "You seem to think..." it upsets me quite a bit. What I say out loud (or "write" I suppose) doesn't include the context of how I got to that point.
I very much am happy for people to tell me when I'm wrong on something, because if I'm wrong I would like to know (more-so if they can actually prove it... just saying "You're wrong" and not saying how leads to nothing, but that is a whole other rant). However, one thing that that no one can assert to know more than I do is how I think, what I'm thinking, or the methods that I used to arrive to something I've said/done. You can possibly predict it depending on how long you've known me for, but to try to claim you know exactly what, is very egregious in my eyes.
I have a pretty high tolerance before my temper is set off (or as I like to say "A very long fuse, but an even higher yield when that fuse runs out"), but there is a small list of exceptions to that - one being hypocrisy, and the other being this.