It's simple, and not made with the highest of quality techniques and equipment, but is nevertheless highly amusing.
Your animation is pretty good, but I'd suggest adding movement to his arms as he walks. That really helps with the realism of the animation. There was some light flicker and set bumps, so you should try to get those ironed out. BUT the punchline was handled well, and you used the normally annoying "minifigure slide" style walk in a very effective and beneficial way.

Also, did you animate with that piece of music in mind? It matched up pretty well with the video, and that made for a nice meshing of the two.