The type of person who plays an instrument (mainly guitar) just because they would like to fit in. They usually congregate into a "band" and play incredibly repetitive music, have no knowledge of music theory, and put down musicians who have a passion for what they do.
Band Faggot: Hey, that marching band is gay. Let's point and laugh at them, then go and play some real music.
Band Geek: Real music? The one with the three chords and the F-Bomb repeated 73 times?