Try to find the green button! It will move each time you click the flag! What happens if you press it...? (Warning don't have your volume on too loud)
Here is where I got the creepy cats from: http://www.digitalmediatree.com/library/image/12/ahhh2.gif Here is where I got the picture from: https://2complicated2live.files.wordpress.com/2012/11/cropped-twitter-backgrounds-28.jpg
