I completely missed the episode wherein Adam and Jamie dipped their fingers into a molten lead. Yes, a molten metal at 450 degree Celsius and their fingers are just fine. They tested first with some sausages (which got cooked at lower temperature) and after hitting the desired results, tried on their own digits. The key here is for the metal to be superheated for it to work.
The myth is based on the Leidenfrost effect, wherein a liquid produces an insulating vapor layer when it comes in contact with a solid object that is hotter than its boiling point. This vapor layer prevents the rest of the liquid from boiling quickly.
So, Myth confirmed? You bet! Action starts at 5:00 mark of the video.
ACHTUNG!!!!!! DO NOT FUCKING TRY THIS ANYWHERE! I’VE SEEN SEVERAL OTHER VIDEOS ON YOUTUBE DOING THIS. THEY ARE THE SUCCESSFUL ONES, THOSE WHO FAILED CAN NO LONGER USE THEIR COMPUTER.