Nice
This entry was great, so I'll describe it in detail.
Graphics- The Graphics could be better but they still were good. If you could have added shading to the teeth, it would have been much better. But nonetheless, they were ok.
Style- This flash is unique. I have never seen teeth farting before in a flash so it's quite original. Nice job.
Sound- The sound is what makes this flash great. The voices used for the teeth and the tongue were very well suitable to the characters. I believe that if you would have included different voices or not have any at all, it wouldn't be as great as it is.
Violence- There wasn't any.
Interactivity- There wasn't any
Humor- It was sort of funny in the way the other tooth smelled it and gave this long description of the smell saying the same stuff. And his eye was twitching also, which made it even funnier. (Although I practically didn't get the Metal Gear joke at the end. Dunno, maybe it's me.)
Overall- Nice job on this. Many people seem to want "Toof2" so, go for it. You have the skills to do another one, why not do it? Good luck on your next entry, and don't give up!