I cant think of the name of it, people back in the day used to use it against their love handles and butt, and it would shake them and they apparently lost weight. There are other ones out there that strap around your waist and shake you, but for the life of me I cannot think of the name. (its all over the As Seen On TV commercials)

Do you think they actually work? Have you tried one before? I was gonna do it as a joke gift to a friend (not that shes fat or anything) but if there is no point in spending $70 on it, then I wont. Thank you!