When a character, despite being intelligent, brave, talented, or an otherwise stalwart and loyal friend is dismissed by fans until they become more attractive, at which point everyone pays attention to how
hot they became.
refers to Neville Lognbottom, a character from JK Rowling'
s Harry Potter series, who was generally unpopular until the actor portraying him (Matthew
Lewis) became attractive in time for the film adaptations of the final
book.
Jeff has many interests that
nobody cared about before he Neville Longbottomed, they still
don't care but at least he's
attractive.
Mary Neville Longbottomed and now she can't tell who is her friend and who just wants to sleep with her.