I’ve started marking the level of milk on my milk carton because I knew one of my roommates was drinking it.

Theory proven. I walked into the kitchen last night and the one who I know has been stealing it says to me, “So I used some of your milk, but I figured it was okay because I gave you some of my milk once….”

WTF? Don’t help yourself to MY milk. (ps. and that milk that you so generously gave me was past its expiration date and you didn’t want to drink it.)