Funnily enough, I'm now marathoning Supernatural again (I know I'm crazy) because a friend of mine wants to watch it so I agreed I'd watch with. On rewatching (for me) Simon Says, we had a conversation along the lines of:

"Now that's being creepily in love with your sibling."
"Yep."
"So if people like incest fics why is there no incest here? It would make more sense!"

...My conversations are weird, apparently.