He's a total moron, people think the sun shines out of his ass, he also kisses it.
His background isn't based in our subject area and this infuriates me, is given preferential treatment and rewards, he is clueless about IT stuff which can be useful in our subject. Loves to make it known when he's achieved something, mansplains, interrupts conversations, sticks his nose in, and talks over you.
We deal with a client who employs interns, continuously he rages the moment an e-mail from them comes in, shouts and swears, hits the table, boss just ignores it as he's spineless anyway.
AIBU to rage at him the next time he does it (probably within the next half hour) and say, your life must be easy if you choose get so angry about a CLIENT double checking something?