There is a difference between a nerd and a geek. A big difference. How big, I never quite knew until I read this post on Urban Dictionary.

“Nerd: A person who gains pleasure from amassing large quantities of knowledge about subjects often too detailed or complicated for most other people to be bothered with.
Often mistaken for Geeks, who aspire to become nerds, yet lack the intelligence, and end up giving nerds a bad name due to their poor social skills.
Non-nerds are often scared of nerds, due to their detailed knowledge, and therefore seemingly high levels of intelligence – and subsequently denegrate them as much as possible as often as possible.
Nerds exist covertly within the fabric of society, often choosing to ‘nerd it up’ in private or in the company of fellow nerds. It is for this reason they are feared the most – unlike geeks, who are easily identified, nerds can only be found out when casual conversation reaches a subject that they like nerding.”
Given that premise, I am a Disney nerd. You’d never know it unless you caught a glimpse of my watch up close and noticed the Mickey Mouse on it. You couldn’t tell unless you surreptitiously were able to sneak a glance at my iPhone and saw the “I Like Disneyland” background. You wouldn’t be able to identify me unless you caught me at D23 Expo or Mickey’s Halloween Party dressed up as Russell. No, indeed. But there it is nonetheless. I have a passion for Disney and especially Disney Theme Parks that borders on something more than just “like.” We nerds are proud but cautious. Especially that rare brand – the Disney Nerd!