It was okay
Enough about the content of the song. My brother competes in four Special Olympics sports, and I volunteered with S.O. for three years, and I STILL didn't find this offensive. It's supposed to be politcally incorrect, that's why it's funny.
As for the flash...it was alright. The graphics were good, and you had the song, which is funny by itself, but illustrating the lyrics isn't enough. Your flash should have added something more to it - better visual jokes, something.
People are probably only rating this so high because of the song - but hey, kudos to you for recognizing that. You obviously picked a good O&A clip to use.
Congrats on the Daily 4th, and good luck in the contest.