Person B: Dude, he pulled a Luna Lovegood, we are no longer on the same plane of reality as this man.
Luna strays from the crowd in her appearance, too, although this doesn't seem to be a conscious thing, (meaning she hasn't decided to dress goth, for example, to express her difference from other people) and takes pleasure in wearing orange radish earrings and a necklace made from Butterbeer corks.
Despite her odd appearance and out-to-lunch views, Luna is very caring and loyal. Although not initially liked by Harry and his crew, she is accepted as a friend by the end of Book Five, after helping out in the Department of Mysteries.
Person 2: Hey, snap out of it. Why are you being so luna lovegood today?
Secretly adores Harry or maybe even Neville O__o
One of the most sought for characters in the movies, open audits were held for her and girls came swarming in their 1000s.