It happens all the time, I'm busy on my phone Or laptop. Someone asks a rhetorical question, "what are you doing", I would instinctively say "nothing, nothing".

Then, they get offended. I know why they were mad, they wanted more respect and they want a much longer attentive response, but that requires extra work. I just didn't want to put extra work engaging with someone who doesn't matter. Extra work means break my flow, pause the video, and talk to them. Why would I work so hard, it's common for people to zone out and not always give big welcome speeches.