my older brother once bought myself to some extent "cool" watches, shock, water-resistant, dust-resistant and other counterfeit ones, I don't remember. So, he threw them on the dispute and from the tenth floor, and for the night in the pool in the frost left, and in the freezer in the water, and how much knocked...
And then one day the younger brother approached him, asked "these anti-shockers?" and on a positive answer with a proudly raised hand with the clock took and slightly struck with a teaspoon. The glass, of course, broke apart, and the younger brother we and the older brother no longer trust the anti-shock things.