Insufferable know-it-all: "Edison didn't invent the lightbulb, he just improved it".
Even more insufferable know-it-all: "Virtually every invention is a mere improvement on previous models. Edison was, more than any other person, responsible for the adoption of electric light. Therefore, if we have to give credit to anyone for inventing the lightbulb, it should be him."
Marge:All right already! Everyone knows the man accomplished a lot. Maybe because he didn't spend every waking moment talking about Thomas Edison.
Homer: Oh, that's where you're wrong, Marge. He was a shameless self-promoter.
Well, why doesn't it exist yet?
Okay, it gets weird right there.