You know, I read something a while back on why people have foot fetishes so I'm gonna share it, because it's actually pretty interesting.
So in your brain you have a strip that acts as a mental map of the human body. This is called the somatography map (or something like that). This is how we remember features, all the facial features take up a larger area on the strip which is why we can distinguish faces so easily. So, the entire human body is on this strip and it just so happens that where genitals are on the strip is right next to where feet are. It works similarly to the somatosensory strip in that sometimes electrical signals to one area can spread to a nearby area as well, so that's why people have foot fetishes.
So in your brain you have a strip that acts as a mental map of the human body. This is called the somatography map (or something like that). This is how we remember features, all the facial features take up a larger area on the strip which is why we can distinguish faces so easily. So, the entire human body is on this strip and it just so happens that where genitals are on the strip is right next to where feet are. It works similarly to the somatosensory strip in that sometimes electrical signals to one area can spread to a nearby area as well, so that's why people have foot fetishes.