Best thing EVER. When you are spotted by enemies in Metal Gear Solid a ! appears above their head and this song kicks in until you get away. If I find someone to do this with my life will be complete.

How to make your own real life Metal Gear Solid experience:
1. Download this song and put it on your MP3 player
2. Ask your friends to join you in a game of hide and go seek
3. Start the game of hide and go seek
4. Wear earphones the whole time
5. When you are caught your friends will have a device that plays that ! sound
6. This music starts by itself on your MP3
7. RUN!