The Glass Shelves

So, I have this glass shelving unit. It stands about 7 foot off the ground. And the shelves are easily 6 foot long, each one. I think it has five shelves altogether. Shelves, sides, the whole lot is made of glass. Not plain glass, mind you, it has some pattern on it. Like Autumn leaves or something with knobbly bits in it.

Anyway, I could see that the underside of the top shelf was in need of cleaning. So I carefully clambered onto the shelf below the top one, and laid on it, totally naked as you do. And began cleaning the top shelf. Unexpectedly, the shelf was loose. The glass lifted off of the end panels. Wow this is dangerous, I thought.