Hmmmm.......
Well, I guess it's not completely bad. The artwork was done well. It really does have that "Alien Hominid" look. The voice work was okay, even if it wasn't very loud. I'm not even bothered by the flash being so short. I've seen shorter flashes than this that somehow managed to be quite hilarious. But with that said, I'm afraid that this flash really wasn't all that hilarious. I do admit that the character movements were kind of funny, although not laugh-out-loud funny. The biggest thing that bothers me is that it wasn't really necessary to use "Alien Hominid" characters for this flash. Since the joke doesn't actually have any relation to the game, you could have easily settled with making your own characters for this.
P.S. I played "Alien Hominid" on one of the consoles before, and it really was quite awesome. I wish I had never gotten rid of it.