There is something about girls on bikes, I think it may be the rhythmic movement of all four limbs at once and the suggestion of sweat.
Here in Portland there thousands of girls on bikes wherever I go. They are all young and fit and fast and I'm, well, me. They are too fast for this pedestrian. They do, however, stop pedalling long enough to drink coffee and beer. Strangely they are mostly equally attractive stationary as mobile. I'm in love with all of them, every punky, dyed hair tattooed one of them.
Think I'll get me a bike.