I started a new job where the main person I interact with is my manager. Sometimes I can't tell if he's mad, joking or asking a rhetorical question. For example he was showing me how to do something with the database and when I clicked on the table it said "permission denied". He always says things like "Tim, why is it doing that?". Does he actually think it's my fault, in the sense I have been missing instructions? English isn't his first language and there is a bit of a cultural barrier. In the example, as far as I'm aware, I can't just give myself permissions. I could see it being possibly my fault if he had expected me to try this table and if there were any problems contact the db admin, though this expectation certainly wasn't made clear to me.
I think sometimes he's joking around - for example the computer I work at has 3 monitors but I usually keep the 2 smaller ones off and today he came up and asked me why the other two monitors aren't working. I just pressed the power button and turned them on.