I'm not stupid.

But apparently I'm invisible. I suppose that's what I get for setting up my desk the way I did. I suspect that from the door I cannot be seen at all. My head leans against the bookshelf, which is stacked with books. Therefore when somebody asks my roommate, "How's your...?" in that tone of voice, I can guess what she means when my roommate responds, "..." (even though I couldn't actually see her gestures, I'd bet they were there) and the girl she was talking to says "Ohhh..."