Underrated predator scenario...that's tough considering my tastes. I guess I would have to say an unaware prey that is so distracted by a predator's words or something that is presented to them such as food that they don't notice the jaws around them until it's too late. It would take an incredibly dense prey for this to happen, but I happen to like prey that are both hungry and dumb. No traditional hypnosis for this is ideal, though a little can't hurt.