I believe that this isn't a rap group but more of alternative / comedy ... its obvious that there not serious but having fun with making something different.
And its not like any of those kids is Jack Black, there's a reason that the its free to watch youtube videos.
And if you don't think an all male half white half asian group named "cock asian" makes the average person think of gay shit, then you don't get the joke, breh. And they're name is most definately a joke.