My MIT electronic lab TA on poetry, "I don't like lady poets." This is the same guy who put off returning a call from his humanities professor for several weeks. He hadn't been going to class, although he had turned in the required essays, and he didn't relish being chided for his absence. When he finally called the professor said, "Thanks for getting in touch. I liked your essay on nationalism so much that I want to submit it for a department prize, but I need your permission. You'll get an A in the course, but if you'd like to attend class you are welcome."
The teaching assistant for beginning graphic design, when I presented a perfectly geometrically constructed capital A as described in the class handout, after the professor said it wasn't meant seriously, just if you wanted to be, heh heh, really scientific. I mentioned that it wasn't all that difficult to do with a computer and decent drawing program. The assistant (the computer expert for the department, by the way) barely glanced at the construction, but informed me that I had missed the entire point of the assignment, as I "hadn't learned to draw."