Gary Mitchell wrote:
The only thing that I know about Harry Potter is that there is a school for witchcraft and a girl named Hermione. I haven't read any books or seen any of the movies. I just have zero interest in it. I can't be the only one.
Nobody is "the only one" with zero interest in something. But Harry Potter is part of popular culture now, so a general knowledge of what it's all about is rightfully expected. Otherwise it would be impossible to make any reference to anything at all.