Disturbing yet memorable
At first, you wonder if something was wrong with the upload, 'cause it seems to have a glitch in it. Then, it looks as if everyone's playing a joke on the poor victim... who ends up with something a bit more sinister going on.
The song in question (by the same title) ends up digging its way into your head before too long -- it becomes one of those pervasive tunes you hear all day at work.
And things get even weirder when the music stops.
Very well presented, with a good pace, well-done (if cartoony) animation, and an ending that makes you wonder what comes next.