Flying Money or Flying Stack of Bills is usually illustrated as a stack of dollar bills with wings flying. The most common meaning for it in communication is Easy Come Easy Go. This shows that money that comes to you without a lot of work will be lost or spent just as easily. and most likely that happens after an expensive outing or some event where it is easy to spend a lot of your precious dollar bills. Easy money. But it is more pleasing to think of it as a stack of crunchy dollar bills just flying in your direction so that you could buy yourself that PS5 or whatever you dreamed about. Now Flying Money as a progress bar for YouTube.