The word 'geek' today does not mean what it used to mean. A geek isn't the skinny kid with a pocket protector and acne. There can be computer geeks, video game geeks, car geeks, military geeks, and sports geeks. Being a geek just means that you're passionate about something.
Olivia Munn, Mac Montandon (2010). “Suck It, Wonder Woman!: The Misadventures of a Hollywood Geek”, p.228, St. Martin's Press
