Fun fact, the somatosensory cortex of our brain is mapped out to the parts of our body. The part representing the genitals and the feet are adjacent to each other. It’s known that amputees have a phantom limb where it feels to them that their limb still exists. They can actually touch their phantom limb by touching the part of the body represented adjacent to the amputated limb. So in the case of amputated genitals, one can stimulate their phantom genitals by touching their feet. Foot fetish is theorized to occur when there is excess cross wiring with the genitals in the somatosensory cortex.
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