I understand that a grad student might have an axe to grind if he's kicked out of school but the student shouldn't grind an axe so that he can attack a professor. It's not the least bit funny. However, if you imagine the guy drawing vectors and performing some complicated calculations, it does make things a bit more humorous.
This isn't exactly news but, hell, I'm writing this on a day that isn't exactly Saturday. If your dissatisfaction is unnamed, read this for a simple guide to angst, ennui and something German.
Have a good weekend!