Stupid Roommates

For some unknown reason, our roommates have no clue how a door works. They get the opening to walk in or out of the house part, but somehow can't master the next, and arguably the most difficult, step of closing the door behind them. You may ask, "Aren't you in Canada, it is cold in the winter, right?" Damn right it is cold! Plus we pay for utilities, so the furnace has to make up for their stupidity on my dime. We have two main doors, one from the kitchen and one from the living room. The problem started to really escalate a little over a week ago (although it has been going all term), I had to close doors about eight separate times in one day. Then one night we got home at about 1:30am and the kitchen door was wide open and the living room door was open a couple inches. As Leander and I were discussing the possibility of putting up signs on the door to tell them to close the door, his girlfriend decided to do it herself. On the two doors there were signs saying, "Close the fucking door. Please." Within the next week Leander noticed the kitchen door open and the sign was gone... I guess they figured if they took off the sign you can keep leaving the door open? Idiots.