EDIT: Thanks for the award guys, and the front page - ya'lls are awesome! Also you can tell if the lip sync is really off or if it's just me sucking if the mouths still move when he's not singing. I won't bore you with the details but if you lag at the wrong moment it will go out of whack.
Well this started as a small segment as a joke for a friend - and I ended up just animating the whole thing.
Enjoy! And if you want the song, it can be found (along with many others) on the artists' website, parrygripp.com.