you are only a nerd if you can't laid by non-nerds.
usually saying you're a nerd is just crying out for attention (see: hot girls wearing star wars or heavy metal t-shirts).
I could see that, and it's annoying when people try to claim being a nerd when they're not in order to look smart or attract the opposite sex.
The counter to this is that although
now I know better and can branch outside of my comfort zone really, really easily, the fact remains is that the way I think about other people and the world in general pretty much the same as I always have. I still have the same values, I still have the same aspirations, and I still treat people the same way.
Being a nerd isn't being some sort of social outcast. If that were the case the weird and hateful pseudo-intellectual fukks over at ***** would all be nerds in their own way. Being a nerd means that you really strongly favor intellectual pursuits. It means that you actually get excited to see a speech by Neil Degrasse Tyson over some other bullshyt reality TV show. Being a nerd means that you're willing to own up to being president of MESA when you were little, or being able to fluently converse about the hard sciences if the subject comes up. It might mean that you enjoy comic book series or anime as recreational activities more than or at least as much as going out and partying.
In other words, just because someone can get laid by someone who isn't awkward, gangly, and socially inept, that doesn't preclude them from being an actual nerd. It just means that their interests might stilt them in a certain direction. I wholly reject the idea that a nerd can't also be cool. You're thinking of dorks, dweebs, or outright social outcasts.
See the guy in the picture?
He's a NERD. I'd also bet my bottom dollar he never hard a hard time getting laid in his day.