I am guessing they aren't the only ones to make a video like that. Claiming it was all a joke afterwards is just weak. Let's just hope these people don't breed.
On a side note, any of us that eat food prepared at a fast food or any resturant have most likely had something done to our food in one way or another. I know I don't want any detials, but chances are I have ate a place that had employees like this dominos had.