Soleron on 20 September 2008
The only reasonable explanation I have read is that the area of the brain responsible for controlling sensory input from the feet is adjacent to the one for the genitals.
Of course, any object or body part can become the focus of a sexual fetish. It's just 'easier', and therefore more common, to create a sensory pathway of that type from the feet area.
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My view is, as ever, people can do whatever they want to, in private, between any number of consenting adults.
