Theres always a lesson to be learned...
Number 1) Dont make fun of retards. I can see you've been given a lot of shit by other people and you probably get it by now, but dont worry i see where your idea came from and some people are over reacting, its not like the volunteering somewhere to help retards themselves, so they're being a little hipicritical...
Number 2) Take your time on your flash, all you did is drew a robot and a man, and have them in the same poistions the whole flash... believe or not but sometimes if you want a different angle... (you have to REDRAW the character)
Number 3) Normally i'd say if you dont have a good microphone or voice actor try to keep away from talking, but the robot thing worked, but thats just tip for the next time.
Number 4) It seemed like there wasn't to much to do in this flash, so before you send your next flash make sure it is a fair length
Number 5) It's always good to have a plot. You might want to try writing out your idea before you actually do, establish characters, a setting, a beggging, a problem, raise the stakes and then finish it, you know what i mean.
Just so you know, the art wasn't THAT bad, but it wasn't to great either. Keep trying.