Wow it took me much longer to figure it out. I stared at the image for a while trying to figure out what I wasn't getting. Eventually I gave up and Googled it. I didn't look too hard for the original video but found a description of it on Wikipedia and saw one reaction video.
I then recorded a video of myself weeping for having lost those 10 minutes of my life I'll never get back. 1 guy 1 cry.