Who needs to keep their windows open when you can just keep your ceiling open! Saves you money on electricity, and all you must do in the summer to keep it cool is to put ice cubes in the hole to cool the air down. Obviously, I am joking as having a hole in your roof/ceiling is a major issue and will end up costing more for your electricity bill. This homeowner was out of town for a weekend and no one was there to notice the roof was leaking which caused the hole you see pictured. When you see a leak get it checked out immediately, it may be nothing, but you never know! Better to find out sooner rather than later.