I've been living with roommates for the past 5 years because it's financially smart and I just like having friends around all the time. I've been super fortunate that I've only lived with friends, but I'll admit...I've broken all of these at one point....how about you?

First Commandment: Thou shall not borrow a roommate’s possession without asking   first.

Second Commandment: Thou shall not pig out on a roommate’s food.

Third Commandment: Thou shall not turn the bathroom into a public restroom.

Forth Commandment: Thou shall not leave passive aggressive notes.

Fifth Commandment: Thou shall not be an obsessive showerer.

Sixth Commandment: Thou shall take out the trash.

Seventh Commandment: Thou shall not have friends over unannounced.

Eighth Commandment: Thou shall listen to movies on his or her computer with   earphones.

Ninth Commandment: Thou shall not make a racket while the other roommate is   sleeping.

Tenth Commandment: Thou shall not openly dislike your roommates significant   other.