Great song, but sloppy execution
I loved the song you chose, it was definitely very catchy and funny. Unfortunately your actual animation left a lot to be desired. I saw a lot of corners were cut, you used tweens when really they shouldn't have been used and it took away from the animation. You didn't redraw limbs so when you tweened them the other end of the appendage would stick out from the body or just move awkwardly making nothing about their movement organic or natural in any way. Another HUGE corner that was cut is that you just reused that same part for the chorus three times in the animation. Now this is more understandable because the song is long but really it gets boring for the viewer. This choice is definitely more forgivable because this saved you hours upon hours of extra work coming up with new animation ideas for the other choruses. Leaving many details and crude tweens unaltered though is less forgivable which is why I give you a lower score, really shape tweens should be left alone most of the time, especially for gore effects. One last thing that maybe shouldn't bother me but REALLY does is that your character who is the survivor has a name tag that says Bob. Yet the narrator, or singer, is singing from the perspective of Bob. Bob is the Zombie and Tom is the survivor. I realize this shouldn't be much of an issue but if you take the time to animate an entire song, attention to a detail as big as that should be payed attention to. Overall nice work though, and just don't get lazy or sloppy by the end. I mean really it takes five minutes to throw on a replay button which greatly increases it's overall presentation, rather then having an anti-climatic finish greeted with no credits or information on the artist and just a blank screen.
Good Work, take what I said into consideration, and I still enjoyed the animation greatly!
-Zeph R