by foot & genitals being next door & wires getting crossed. Same reason why smell often a reliable memory trigger for people, olfactory bulb lives next to the hippocampus! If you want real nightmare fuel you can look up artists’ renditions of “if homunculus was real w proportions based on cortex”

Unfortunately I have cursed knowledge to share courtesy of Sensation & Perception in undergrad. In your brain lives the cortical homunculus responsible for processing sensory input from body areas. It’s laid out like this. The neuro underpinnings for foot related paraphilias is thought to be caused