Guy takes Thia's art and uses it in a blend. When he's called on it, he says that it was just some background he'd found somewhere, not on Thia's site, and since nobody credits for anything anyway, he shouldn't have to either.
A couple of people are like "Uh, no, you still need to credit."
Everyone else is like "omg stfu you're just jealous of his amazing ability!" for like eighteen million pages.
That's pretty much it.