Way before the rise of the hipsters there were nerds . Although not as smug and, frankly obnoxious as hipsters, nerds tend to say things that only they, and a small group of other people with the same interests would understand. The are the originators of the "Umm.. actually" phrase, that only exist to differentiate between those who know and those who do not, in fact, know. "Oh, you don't know what Avogadro's number is? No, you probably never heard of it, why would you? Than you will probably…