OfficerImpersonator
Seattle-area Rounder
I suppose bikes can be sexy in the same way that cars, boats, airplanes, etc can be sexy. In that perspective, there is only one piece of machinery that I find sexy --
Supermarine Spitfire Mk I-IV
Just something about those elliptical wings and the slender fuselage.
And the North American P-51 isn't sexy?
But again we're off-topic. As I posted earlier, it's all about the curves. The curves of a nice fairing on a RT, RS, the previous model K-GT, the current K-S, etc. Anything with organic curves and not sharp angles (see new RT/GT). The curves in the fairing, gas tank and cylinder heads of Bob's gorgeous airhead. The curves of a Pilcher fairing on a Flying Brick. If something affectionately referred to as a "Flying Brick" can be sexy, it can only happen with the addition of after-market curves.