N. A guitarbarian is a guitarist or bassist who refuses to take care of his/her guitar/bass properly. The key signs of guitarbarianism are:

-Refusal to change strings
-Not adjusting the truss rods according to string gauge (if possible)
-Leaving the guitar lying around to gather dust
-Exposing the guitar to extreme temperatures or highly fluctuating temperatures
-Damaging the guitar on purpose (except when smashing the guitar on stage, because that's a past-time)
-Not tuning the guitar when you know you need to
-Over-tuning your guitar (tuning the guitar excessively or screwing with the tuning keys excessively weakens the strings)

Your average guitarbarian is a stubborn, preppy jerk who believes that they can pick up a guitar/bass and weave gold with it instantly, because Jimi Hendrix, Frank Zappa, and Eric Clapton could. Either that, or a total slob who treats his/her guitar/bass like a two-dollar 'ho. Otherwise, anyone can be a guitarbarian. Guitarbarians are frowned upon greatly in the music world, and are usually ostracized in ultra-obsessive music cliques, maybe even beaten or killed.