So, the room that I live in requires me to share a bathroom with another guy. The bathroom is located between both of our rooms, with a door on each side. The guy that I share it with has never once cleaned the damn thing. My anger over the matter has grown over the past couple of months and I've decided to take action.
It is an unspoken code that if the light and fan are on in the bathroom, it is occupied. This prevents us from barging in on the other while in the middle of our business. I've noticed of the past couple of weeks that he may have irritable bowel syndrome or something equally wrong with his colon. So, in order to enact my revenge I have decided to keep the light and fan on at all times while I'm home. This way he will always think I'm in there and never get the sweet release from his IBS. All he had to do was clean the toilet and we would have been cool, but not now.