If you were a guest in someone's house and you knew there were other people in the house with you and you encountered a bathroom with a closed door and you could clearly hear the fan turning, would you casually open the door or, pausing to consider the factors in play and deducing that there might be someone within, would you at least knock before utilizing the doorknob? Uncle Fred chose the former option this morning, opening the bathroom door to find me sitting on the porcelain throne. *sigh* At least that brain donor isn't a blood relative. I cannot wait until these people are out of my house.