Use your eyes to see the animation, and your ears to hear it. If necessary, use your brain to decide if you should rate this in a certain way, or perhaps type some words into a box below the animation.
I had an idea. I had MS Paint. I had TF2. This happened. Enjoy, I guess? Friday, July 31, 2015: Fixed some "lip syncing" that bothered me a bit. You probably won't notice it.