Alright...
I really just didn't find this funny at all. Regardless of what it's intended purpose of initial creation was and/or how long it took to make. It was annoying and obnoxious, but not funny... therefore, utterly rendering it into nothing more than just another pestering endurance video on Newgrounds.
First off I really didn't laugh or chuckle or anything at all at what happened throughout the whole thing, and the drawings were bad, even for its own low standards. I kept hoping it would end sooner, but when the song part came up I had to stop (presumably halfway, I'm not sure how much more running-time there was), it just got BORING while retaining its obnoxious and annoying state...
I mean the mouth-flapping and all... even though the Japanese get away with it all the time, it's no excuse to just be lazy and use it for lip-syncing, it is just so unpleasant to monitor, I just hate it, I hate seeing still images or an image with a motion-tween on it sliding around with the mouth-flapping...
And again, it's no excuse that it was made extremely quickly or whatever, it was just... awful... there's such a thing as messy movies, and they can be done PROPERLY, but THIS was just lazy, there was no harmony, even sloppy movies need harmony. Otherwise, it just looks like a 3rd-grader through this all together in a few hours with the trial of Flash he got.
Sorry for such an overly-in-depth review on such a little joke for a movie, but it's not fair for some users to get higher scores than deserved because of their fame. Some people spend a month or more on DECENT work and yet STILL get a score like this video has. I would say this deserves something more like a 2.20/5.00.