As I remember MRWalker would say, atheism is not the opposite of religion, just the lack of belief in a deity. He often said buddhists, for instance, could very well be called atheists, because they have no deity, yet they are still kinda religious. Of course, most atheists are not religious at all, and it is surely no religion since whatever they do, the only thing that defines them as atheists is the lack of belief in a deity; so when brah's friends put themselves in the position of a god, it's nice and all, but that has not to do with atheism.
And yes, I would like to see brah's definition of religion too