One of my students is driving me nuts with asking questions. Usually, I like questions. But he keeps asking me about things that he won't cover for another year or so, and which I haven't looked at in years, and then he just will not stop asking no matter how many times I tell him "I don't know." I've tried giving him suggestions for where to find his answers, or better people to ask, but he just keeps asking me, I say, "I don't know," and he asks the exact same question again, and so on. And this is all going on in the five minutes before class when a bunch of other students are waiting with questions actually related to the course. I tried telling him, "You can come to my office hours to discuss this, so I can answer when I have more than thirty seconds," and he just heaved a huge sigh and went back to his seat and pouted for the rest of the class.
After dealing with him, I had no social interaction left in me for dealing with any other people, so instead of going grocery shopping like I'd planned, I came right home and ordered pizza from the place that takes internet orders.