Who would have thought that your jeans could one day save your life from drowning?

There are two brothers from Germany who recently took a job where they had to pick up a rich guy's yacht in New Zealand and sail it all the way to Brazil for him. Last Wednesday, the brothers were off the coast of New Zealand when one of the brothers, Arne Murke, got hit by the main sail which knocked him overboard.

Arne couldn't get back to the boat and could not reach the life preserver tossed to him as a huge swell carried him out to sea. So what could he do to keep from drowning? Well, he used an old Navy trick involving his jeans.

Here's the trick, first take off your jeans and tie the ends of the pant legs together into a knot. Then pull them up and over the water to trap air inside and hold the waist closed with your hands. As air collects in the pants, you can stick your head through the legs and use your jeans like a life jacket to help you float and save energy and if the air leaks out you just do it again.

This hack helped to save Arne's life for three and a half hours until the Coast Guard spotted him.