A new weight loss device called the "DentalSlim" just came out. And people are comparing it to a medieval TORTURE device . . . because it LOCKS your mouth SHUT using magnets.
It goes on your top and bottom molars, and only lets you open your mouth two millimeters. So you're forced to stick to a liquid diet. And it comes with a key that lets you open it if there's an emergency.
It's basically like having your jaw wired shut, which was actually a weight loss technique used in the '70s and '80s. But people who did it didn't tend to keep the weight off.