Person 2: Hell, yeah! I was at my local book shop from 7pm until Midnight on 20th July 2007 to buy it!
Person 1: 'Course, you're such a Potterhead *gazes adoringly*
The extremity of a particular Potterhead's behavior can range from merely obsessing about the books by reading them more than 5 times each, and the movies by watching them more than 5 times each, to a fangirl or boy who stalks the celebrities, own a livejournal to write fanfiction, draw fanart, post self-made YouTube fanvideos, pray to shrines accordingly to their section of the fandom (eg. The Good Ship, slash, Manippers...etc), listen to Wizard rock (Wrock) and/or spend hours on a discussion forum debating on theories and opinions.
The ages of Potterheads can range from 13-80, depending on the maturity of the person. Extremists are generally older, as the Harry Potter fandom revolves largely around sex between characters, money needed to BUY Harry Potter items (that parents are unlikely to comply with), and a good sense of humor and wit to protect, again, the Potterhead's section of the fandom, as sections tend to clash (eg. Shipping Wars).
A Potterhead, however, is not a 10 year old who wears Harry Potter gear, dresses up with glasses, a cape, and a drawn on scar. A Potterhead is NOT one who thinks Ron Weasley is stupid (with exception to radical H/Hr shippers). A Potterhead is not one who does not know how to read, but watches the films and worships Emma Watson. A Potterhead is not a nerd. Nerds are too busy studying to obsess about pop culture.
A Potterhead can be closely affiliated with fangirl, fan, or Obsessed Freak of Nature.
Potterhead: Go fuck yourself, you friggen peice of shit. *SQUEEE*
Dude: seriously...you are such a POTTERHEAD
- own every Harry Potter book and movie,
- dress in costume to attend the premier midnight showing of new Potter movies, and
- never miss the annual Comic Con Convention in San Diego (typically late July to early August).
Kris: Is that Shanley dressed up as Dumbledore?
Devon: Yeah, she's such a Potter-head.