5. Astronomy
Other than not mentioning Pluto in Astronomy. A certain Professor was touchy about it. Though it has been many years since it has not been a planet. Nigel had his mind on other matters. Such as writing horrible puns on a piece of parchment. He knew he was not going to know all the questions. He hardly even studied for Astronomy.
But he did love Astro Puns
Like
I enjoy constellations. I am Sirius.
He had many more to go before this class was over. Maybe he would even answer a question or two before Flamsteed ended the class.
Maybe