The Bikers: Episode 1 2/2 Listen, it's just not that good. You have a great story, but the lack of lip sync and character variation kind of makes it all fall apart.
Here's what you should do next time:
1. Get some more lip sync expirience. This makes a huge difference.
2. Don't rely on motion tweens. Actually frame-by-frame some stuff.
3. Some more line variation. This makes your characters breath life. Also, don't use the shape tools as a crutch.
4. Maybe some painted backgrounds would look really nice.
Like I said, it's pretty funny, but needs some work to truly get out there. Good luck!