1. Start this video (http://www.youtube.com/watch?v=SS1dO0JC2EE) and pause it at :24 seconds. Then mute it.
2. Open another tab/window and start THIS video (http://www.youtube.com/watch?v=ZThquH5t0ow).
3. Tab back to the first video and watch it with the music from the second video.
It's the saddest and funniest thing ever.