It's like, imagine a story where a man named Jeremy had an irrational fear of eating centipedes, so he abandons his home where he thinks all the centipedes live, and then, through a series of increasingly convoluted coincidences, he ends up eating a who bunch of centipedes. Realizing he's eaten all the centipedes, Jeremy gouges his own eyes out because he's so horrified about what he did.

Then a doctor meets a patient who has a weird issue about eating food. "Oh, you're basically like Jeremy." What? "Jeremy, the guy who wanted to eat the centipedes." ... What? "Centipedes. You want to eat centipedes, and that's causing all of your problems with food. Like Jeremy. You have a Jeremial complex, because you want to eat centipedes." ... Sorry, can I see your diploma again?

Except instead of eating centipedes, it's murdering your dad and having sex with your mom.