Air Guitar

You know you do it: sometimes, especially when you are driving, perhaps just a little bit "toasty", a great driving song will pop up on the stereo, and you will, inexplicably, indulge yourself in air guitar. We all do it. We're human (and cool). My question is, do you play lead guitar, bass guitar, keyboards, or, mostly, drums? And I also want to know if this is just a male affliction, or do SoWallers, of the female persuasion, sometimes indulge in this infantile, but totally liberating, display.