I'm a 22-year-old female, and I love to ride my bike to/from class; I no longer arrive late! But, true, most walk around just fine (here at Yale), and some even skateboard (so hot!). So... After reading about how biking might reduce sensitivity "down there", I might be asking for a skateboard this Christmas.
(I'm a little unsure of the demographics for this site, but I figured this information should be shared, nonetheless)