Just to test out my own will, i decided i was going to put 2 normal sized ice cubes. Ya know, the ones that look like half ovals. Well, anyway, I clenched them both in my hands, until they melted. It took about an hour. In the end, my hands were a little numb. And just a little bit red. I asked a few people who tried it, and asked how far they got. None of them, made it as far as I did. One girl only lasted 5 minutes, her hands were blue and she had to put her hands under hot water for about an hour. Another person had them melted halfway. And knowing her, she has a very high tolerance of pain.
So peoples, if you've done it, how long did you last? And if you haven't. Get some balls and do it.