Someone who is beyond in love/obsessed/crazy for Harry Potter.
Someone who thinks about Harry Potter basically everyday of their life, and is so obsessed they are basically diseased with HPOCD (Harry Potter Obsessive Compulsive Disorder)
Damn! Do you know Riley? That girl is SUCH a pothead. She has seen every movie like, 10 times, and she owns every Harry Potter book in every language, even sign language. I mean, honestly. I heard she even stalked down the entire cast while they were vacationing together in Fiji. This girl is one serious pothead.