What is this fascination? Is it the blending of mobility and sensuality? Is it freedom? Independence? Hornyness?
Whatever the cause, bike porn has griped the consciousness of the citizens of Portland, Oregon. These are a people now obsessed. These are people who are determined to travel under their own power, people who are determined to liberate their bodies, people who cross lines ass-first dancing backwards with their pants around their ankles.
It is coming to you sooner than you realize. You can't prevent it. Go about your business.