(adj.) properly nerdy self-conscious emo:
1. for those people who want to be emo, but aren't, because simply wanting to be emo disqualifies you; you must just 'be' emo.
2. for those who just 'are' themo (they often do not understand the category)

However, for many, becoming 'themo' is an art; one must dress, taylor hanson style, utterly dorkishly, as a nerd, wearing unnecessarily geeky glasses (like Willy Mason) and mile-long scarves and being so hip you're practically prosthetic.
Themo kids are into music by bands either far too cool or far too ugly to sell records.