But yeah, this is old. Actually, people were doing this very shortly after the attacks. There's also a way you can fold it and it looks similar to the Pentagon.
I guess you didn't understand what I was saying. I meant that it is a fun bill game, like other fun tricks you can do with the bill. Not that it is fun to relive that... though I believe that folding a bill into that could never be considered "reliving" it.