For future reference, try to draw more feminine thighs :) those were very thick and manly-looking.

Well done, although the main mistake you did is that there was too much clutter. There was no dominant voice(quiter in comparison to the announcer and fighting characters) or visual to lead through the entirety. And I think it's also missing out on a punchline. Not really sure what you wanted people to take out of the animation =]
I'm sure you realized that by other reviews by now though.

I just wanted to say I LOVE your stuff man, I merely watched 2 of your animations and I'm already hoping for more :) favourited.

This compliment might be strange among others - but damn, that music! So groovy, gets in the mood so well :3 Great choice!
You should seriously consider doing more of these(not necessarily this genre ofc) - You have a level of animation matching that of ZONE.
Could easily monetize that I believe.
Some things you could work on :
Your own voice actresses
More fluid animation(less in and out, there should be a sense of "impact" behind each thrust like if you feelin me, moar titty bounce and booty thrust waves haha)
Perhaps some in-game little text bubbles with some naughty lines during the interaction?
More interactiveness?(Smack dat ass! Pull that hair!)
More randomness(randomly changing expressions, head bangs, doin stuff with hands etc, anything to make it look less artificial)
More customization?
That's all that came to my mind straight up.
Hope that helped, highly anticipating future parts.
Cheers.

Nice work.
Some feedback - you could stretch the interface. It's a bit small for my taste.
It'd be nice if you could somehow interact with the art/ng portal so you could drag em to this flash here... or at least, upload em, so you could have an art/audio playlist of sort.
Replacing art with NG audio visuals is also a fancy option.
Cheerio.

Haha

He's not grumpy! He's a jackass! :D

Hmmm =d

I loved the laughing transition.
But I was a bit disappointed at the ending.
I expected some punchline from Sin there, something more than an "Oops"

Haha

A totally different interpretation from mine ;)
He's amusing - especially the bit with checkers ^_^
I'd love to see what you think of mine ;)

Sometimes I wish I could learn how to draw just to match your and Shad's material :D
Are you willing to be my mentor :D? haha.