Rule #8

Don't be afraid of faculty. They can smell fear.

http://www.telegraph.co.uk/science/3545435/The-smell-of-fear-is-real-claim-scientists.html

Rule #7

It is never...never...never ok to be in the library on a friday night during the summer unless you are working on a major project (i.e., your dissertation or the precursors of it) or you are one of these guys and you are on a quest to find Zelda.