The reason why it lacks sound effects is because its from flipnote hentia.

Not bad, but why is there no music or sound affects? The art is okay, but the animation is lacking. You need to put more time and detail into your videos. It was sort of funny, though.

How can people like this so much? It's godawful. It's absolutely void of both audio and entertainment value. There's no preloader or play button and no replay button; it just loops. Originality is scarce. The only plus is good animation with decent art.

not bad accualy pretty good it looks like this is like the 5th vid you posted or so my only complaint is the loop but other than that nice vid

This.. actually.. isn't all that bad. Though it desperately needs a bit of audio.
And either stop it from being a loop (that REALLY makes it look like a gif file), or make the break between two runs longer so you know when it starts and when it ends.
All in all, I like the style. Expand a bit on the idea and make it longer and try out some audio. Effects, epic music... it can really give some depth to your submissions!