to be nerdy, but in a cool way. similar to geek chic.

Some thing or someone that is nerdy, in a cool way...
a mix between "deadly" and "nerdy".

nerdy Trekkie types who are always correcting your spelling or grammar.

Someone who is obviously a high tech, or tech saavy person, although at times may have difficulties describing tech terms or common computer terms to a lay-person or non-tech saavy people, at times leaving the audience dumbfounded.