Ever not been thininking about it an let slip one in your wet suit while getting geared up? Nothing happens at first because you're wearing a fairly tight suit but as you move around say a minute or so later seepage around the neck area makes it totally impossible to escape and since it happened a minute or so before it's like it's someone elses and that makes it way worse. And then, depending on what you ate the day before to cause the incident in the first place, this situation can be down right deadly.