Ahahahaaa!!!!
That was great!!! You have some real artistic talent!
When you said you were new to flash I thought that this was going to be some kind of crappy stick thing like so many new to flash people make. Suffice to say I was very happily WRONG in my assumptions. Anyways this was great! The art was supurb, the joke well paced and the punchline well delivered. The sound was good quality, but the sound level was a little low.
Ok, tweening, you don't need to worry about tweening. With your skill you should definantly stick to frame by frame. I think that FBF is a much better way to animate. Tweened animations tend to have a really flat and 2d appearance. Frame by frame is much more labour intensive, but the results are all the more better......... But I suppose it depends on what you're animating though. But for this flash FBF was the right choice.
Please release more flashes, this was brilliant and inspired me to put more effort into my flashes. Thank you!! =)