It happened to me, in a less dramatic setting though..lol
My mum was replacing the gaz bottle in the kitchen with the help of our neighbour, when the neighbour lost their grip on it and it landed on my mum's toes. I was only 10, but I lifted it off her foot by myself in the next few seconds. I was never able to lift one again until I was about 14. I guess it's just a case of your body reacting before the brain has time to say "hey, hang on, you can't do that!!!".