I used to work next to a company that made custom mirrors and they had this massive laminating machine and i asked the guy what it was for and he said it eats fingers. I looked at him funny and he put his hands up in the air and the machine that makes the glass you can put on ceilings pulled all 8 of his fingers off his had. He was feeding the glass into the machine and put his hand into it also

He had each one put back on.
But back to the original post.
They do make mirrors that have a special lamination on the rear of the glass that make it good for mounting on ceilings and it also stops the glass from coming down in bits if it gets broken. You def don't want a 2ft long bit of glass in your eye after your one night stand kicks her hells into it.