Should add that, if you do eat one of these (or consume any of the other “extreme” hot sauces/peppers), the best remedy for the burn is starches and fat. Drink milk, eat bread, eat rice etc. These foods will absorb the oils that are causing the burning sensation. Ice cream can also work (similar to milk) and has the added benefit of the cool temperature which can produce an additional perception of heat reduction.
Drinking water will actually make the burn worse, because it will not get rid of the capsaicin oil, and may actually spread it.