(David and Ruth are a brother and sister in their early twenties)
(David’s friend Jeannette sometimes uses hypnosis on him) Jeannette has sent David over to do Ruth’s housework for her, and anything else she might tell him to do. David is a fairly docile guy and is willing to do whatever Jeannette wants. In a hypnotized daze, he knocks, and his sister Ruth opens the door in her bare feet, smirking and clearly delighted to have her brother under her power.