Another whaaaaaat?

I have some great conversations with 'N'. To recall a few:
Dart Board/Dark Lord
The Disgusting Facts of Life
Bird's and Bee's at Target
Sugar Cookies, Elvis and Poop
Elves vs. Doorfs

And here we go again......

N: Are all terrorists Muslim's?
Me: No, many of them are, but not all.
(pause)
N: So in the next Harry Potter movie why is Professor Snape called the Half Blood Prince?
Me: Because his dad was a regular guy and his mom was a witch. His Mom's last name was Prince so he called himself the 'Half Blood Prince' because he had half of his Mom's blood.
N: And is that why he was half bad and half good? Because his Dad was bad and his Mom was good?
Me: Well we don't know what kind of man his Dad was. Professor Snape was a complicated character because he had made some bad choices but then he tried to make up for them by working with Dumbledore to defeat Voldemort.
N: Well I though he was half bad because he was half Muslim.
Me: Whaaaaat?
N: Half blood Prince, Half blood Muslim.
Me: You mean half blood Muggle?
N: Oh......Yeah.....Nevermind.....Muggles aren't terrorists.