"However, he did clarify that I wasn't doing things the way he wanted... I instead was reading... and that bugged him. He said my reading wasn't beneficial to him. I was reading a relationship book. I stated that I was reading it because knowing that I own a car, does not make me a mechanic. I put the book down and started to do the things he was p!ssy about."
so you're at "work" reading a relationship book, then got snarky when he called you out on it, and what response did you expect?
from everything you've described about him and his work ethics and his attitude towards work, he acted exactly how i would have expected him to, and i dont even know the guy.
if my boss or business partner caught me goofing off reading a relationship book, while i wasnt doing what they asked/wanted me to do, i think they have the right to get upset.
and if i then made some snide remark about it, then absolutely they have right to be cranky, I would have deserved it and asked for it.
But you left out all those important details from your original post: the fact YOU CAUSED his irritability.
was your intention to get sympathy from us? or try to prove you're a martyr? or that he's some irrational person?
from my perspective you caused it by your choice of actions, you added to it by your response, and you acted irresponsibly by not doing your job and not expecting his exact response and then complaining to us about him.
"In a ham and eggs breakfast, the hen is involved, but the pig is committed".