Okay, but...
I like the graphics and the style, but give each of your characters a mouth rather than bobbing their head. And have them talk with the vocals. I know lip syncing can be a pain but it looks better if you do it. Other than that, the characters are fine and your graphics have a nice style.
On a side note, it was really only a little funny. Really good humor has to be fast, sharp, witty, and definitely unexpected.
This is a good movie to build upon, and if you continue with it and have more stuff happen, I'm sure it can turn out to be great. Good luck with it.