Ginny continually tells her she’ll ace tomorrow’s test, but Hermione refuses to go to bed and resolves that she’ll stay up and study until she’s 100% sure she’ll do well. Ginny decides to stick around and finish a paper or two. But after a while she notices that Hermione gets a little loopy after her bedtime as she tries to angrily explain proper solutions to the endings of muggle movies that Ginny’s never even seen.