Something that makes someone noll, makes them extremely surprised. The word has no positive or negative connotation on its own, context decides.
TV station: "City officials announce a new library that is bigger than any other library in the country is being built."
Viewer: "That is nolling, I'm nolled."
TV station: "In other news, an explosion at a factory in Detroit takes the lives of 39, health officials claim."
Viewer: "How nolling! That nolls me even more!"