I went to see a friend of mine last week. He lives around the corner. The first thing he said was that his garden hose blew up. I couldn't get my head around that. He said, "yeah. it blew up." Then he explained to me that it was one of those hoses you see on T.V. The one that grows when you put the water in, then shrinks when the water runs out.
He took me to have a look at it. There it was, a long snake with the side blown out. What it is, is a wire mesh that expands, and inside is a hose like a balloon. Not he thickness of an inner tube, but the thickness of a balloon. A spot on the wire mesh had broken so that the balloon made a bubble at that spot. It kept growing, and then 'Boom,' water everywhere. And that's the saga of the hose that blew up.