Ahem!
>Nudity in the Canterbury World Naked Bike Ride is NOT an excuse for self-exhibitionism.
Erect penis != exhibitionism.
The former is largely governed by a reflex arc, the latter not.
A stiff public bamboo could be acutely embarrassing with, or without, the presence of prudes or the cops--not speaking from experience. And there's no Off button or anything, even!
Anyway, come prepared.