What do people do to their watches???

[Clay]

Now I have been wearing a Rolex everyday, all day for almost 30 years. The exact same watch for the first 20 or so...And although I'm not a commercial diver, I worked with my hands and not at a desk all of those years.
But I have to ask myself, what do some of these people do to their watches???
I have recently seen a couple of examples that looked as if someone had put them in a dryer with a pile of rocks and run the dryer for about a week???
How do these watches get like that???