My step-daughter and her hubby like to smoke, but I make them go in another room when the are around. Well, it seemed that they would never come out of the room, so I told them if they didn't I was going to open the door and fart them out. They laughed at me, but I did it time after time, til one time I got no answer. I opened the door wide and realized that they had made a hasty retreat out the back door!