I liked it.
Nicely random, especially the "moral" at the end. I liked the graphics and animation, too. I especially liked the incongruous juxtaposition of the pelvic thrust dancing with Mr. Simon's "Elevator Music." A few more seconds of your characters dancing to that music would have been cool, lengthening the movie without straining the gag and making it feel too long. As far as the sound is concerned, I suspect your microphone isn't the problem, but how you're using it. Back away from the mic so the audio doesn't clip. If necessary, bump up the recording level in your audio recording software. And please: "If you're thrusting your pelvis..." not "If your thrusting your pelvic..."