look up any word, like dirty sanchez:
From the movie dude where's my car, you can tell that the root word shibby means cool, sexy, wasted, and other cool related words so therefore unshibby would be the opposite. Something of Boring, ugly, uncool status
Dude, that's totally unshibby

Eww that girl is unshibby
by Superpoopnugg March 09, 2014