There's this one guy who shows up to all the computer science and engineering classes. No one likes him because all he does is ask "questions" which aren't really questions, they serve only to demonstrate that he knows all the material already.

He is also not a student but attends all our classes. In the end we got pissed and emailed the instructor and got him kicked out of one of our CS classes but he still goes to all the engineering ones.

Makes one wonder how he can afford to pretend to attend class all day and not actually have to go to work. Sad.