look up any word, like hipster:
 
1.
1). When girls flock to guys playing guitars, regardless of the guy's skill. Guys with this kind of guitar swag are usually extremely attractive to begin with.

2). Holding and/or playing a guitar solely for the purpose of attracting members of the opposite sex. The people with this kind of guitar swag are often devoid of actual talent and/or skill.

3). The results of actually being awesome at playing guitar, to the point that the ladies flock. The ones who possess this kind of guitar swag often are too busy being awesome at guitar to notice all the ladies.

See: Guitar slut, guitar whore.
It's your guitar swag, dude. Wake up.
by Theodore Geisel March 26, 2011