At home

One day, you find a odd remote. From what you find, it allow two people to swap body from the neck down. Eager to try it out, you go home, where you expect to find your mother and sister. You approach one of them to their room and zap them with you. In the end, you have the victim's body from the neck down. But during the zap, the remote has also being transfered to the hand of the target, who has your body.