Are foot fetishes caused by the feet and genitals occupy adjacent areas of the somatosensory cortex? Could that explain why they are relatively common.
The crew that lables this a paraphilia would say it's association and choice based rather than structural, but then again this is going off a 1996 DSM-IIIr haven't upgraded lately.
perhaps the answer would become apparent if one could discern the position of the breast locus in that same equation. <--science joke
is this a question about that homunculus drawing? I always thought that would make a cool tatoo except the nose looked ridiculous