You definitely were making a statement about the wieght problem in the United States. Some moments in the animation were good; the person going in to McD's and getting the diet coke was a interesting irony.
On the flash spectrum, your transitions were well done, and your graphics were good enough for the animation. However, I think your screen ratio was a bit off for what you were actually drawing in. I think it was supposed to 550 x 400, but it looked much larger than that.
Otherwise, I think you did a good job. Some may take offense, but really, a lot of animations on NG may have people taking offense.