Well, I wouldn't really call it an animation
clip (or a pencil test for that matter), but it's definitely a cute
animated storyboard.
Here's an example of an animated storyboard:
http://blacksataguni.deviantart.com/art/boondocks-basketball-sequence-91732299The nice thing about animated storyboards is that you don't really need to clean it up. If you and the viewer can understand it, it serves its purpose.
Now, try actually animating it. XD