I know that I can be. I say things that I mean as a joke, but can be taken as being mean or just being a jerk. This happens to me both in real life and here, on the internet. I've been told time and time again that people have trouble telling when I'm joking, or when I'm being serious. It comes down to my word choice, my overall bluntness, and my rather dry sense of humor.
In doing such, I hurt people. I don't mean too, and rarely in an impactful way, but it does happen.
If I have done this to you, I am so so sorry. I didn't mean to hurt you, the thought of ever purposefully doing so causes me almost physical pain.
I'm sorry.