This is a nerd whom acts normal offline. It is often noted the people they associate with are not aware of their advanced knowledge of technology
Nerd: Have you seen the one petabite hard drive its 1337
Normal: Yo whaz up check out that new console?
Nermo is a combination of these two
Nermo: Hey check out that new laptop looks cool. I'm going to the bar with Clare tonight what are your plans?