Harry Potter is such a huge part of modern pop culture that everyone knows something about it, however vague. But it's surprising how many people can't even state the basic premise of the series. Most people know that Harry is an orphan kid with a scar, but after that descriptions start going off the rails. As the people in this incredible video put it: "an owl flies to his house and tells him he's going to be a witch?" or "one day a monster comes into his room and puts a 'Z' on his forehead."

To be fair, "Gryffindor" and "Hufflepuff" and so forth are not actual words, and therefore not that easy to remember if you haven't read the series. Ask your poor, unsuspecting non-Potterhead friends to try to pronounce the Hogwarts house names, and see what they come up with.

You'd think that people would pick up on the different house traits after years of seeing their friends post house quiz results on Facebook. And yet, after reading the first three books, my father can only tell me that the Slytherins "seem mean" and the Hufflepuffs wear yellow in Quidditch games.

Even a true Potter fan might need a minute to recite the exact rules of Quidditch. But try asking someone who's never read the books, and see if they even know that it's a sport played on broomsticks. And if they do know that much, can they recite the rules? Do they know what a snitch is? How do they feel about Bulgaria's narrow defeat in book four?

I'll bet you anything that someone out there thinks this is Gandalf (or maybe even Merlin).

A fair number of people who haven't read the books can still name Ron and Hermione. And a shocking number of people firmly believe that Harry and Hermione are in love. As one non-reader put it, Harry "becomes entangled in a love triangle with his two best friends... becoming jealous at Harry's natural wizard abilities, the redhead conspires with Severus Snape to kill Harry."

Alternatively, you could ask "who are the Dursleys, and why are they terrible?"

If there's anyone out there who doesn't know what a Muggle is, but does know what a No-Maj is, you have my permission to stop being friends with that person (I mean, don't actually do that... but I think we can all agree that "No-Maj" is a terrible Muggle alternative).

Voldemort might be the main villain of Harry Potter, but quite a few non-fans mix him up with Snape (Snape wishes he was that charismatic and charming). I'm willing to bet that most people who haven't read the book know that Voldy is a bad guy... but what do they think he's after?

I would genuinely like to know the answer to this one. I mean... evil people don't have noses, Jo? What gives with that?

For the record, it's a hippogriff. Or, as this guy puts it, "some kind of dog."

...or, if this question is a bit much for them, just try "what's a house-elf?" or "who is Dobby?" or "what's this thing?" and see how many people say "Gollum."

Do non-readers know about Ginny? Do they really all think that Harry marries Hermione? Do they think that Ron winds up with Neville? What's going on in their non-reader brains?

If they know with full confidence what a Weasley is, then go ahead and ask them to name all the Weasley kids... in order.

There's honestly no succinct answer to this one (he is either the MOST ROMANTIC HERO IN LITERATURE or a HORRIFYING MONSTER WHO TRIED TO KILL NEVILLE'S TOAD), so it might be nice to get a (very) outside perspective.

As one non-fan put it confidently, "Harry Potter was born with a lighting bolt on his forehead, therefore signifying that he is a special wizard." Another one claims that, "he got that scar when Voldemort kicked him in the head or something when he was a baby." Uh...not quite.

Try not to scream this one in their face, if you can. But really... why? Ask them why they haven't read the books yet, and then promise you'll stop asking them annoying questions when they finally pick up The Sorcerer's Stone.