I'd like to explain this one, as it actually makes sense to me, but it would take too much time to explain.

The characters are Edd and Kevin from the Cartoon Network show "Ed, Edd n Eddy" having a silly dance party. There shouldn't be a reason why you wouldn't want to have this animation on your homepage.

An example of this sticker for you curious souls: http://s6.beta.photobucket.com/user/VampireMeerkat/media/dubbeldschool.gif.html?sort=3&o=0