"тормоз"(andreevna); пофигист(andreevna); дёрк(Yanamahan); задрот(an odd, socially awkward, unstylish person: The kinds of kids regarded by peers as dorks, nerds and screw-ups have suffered years of rejection, based on appearances, quirks and familial conditioning.PX_Ranger)
урод(It's a quite accurate translation. Here's a good example:: "Mr. Big....huh...you are a dork, dude... Go crawl under your rock and disappear." (expressing disgust)ART Vancouver)