Tickle torture is the non-consensual use of tickling to abuse, dominate, harass,
humiliate, .... Even tickling the soles of the feet has often produced death; what
then must be the excruciating pain...
You probably won't get much of a response if you try to tickle the sole of another
person's foot by pushing the open palm of your hand against it. What's more, the
Nov 15, 2014 ... Tickling the feet can affect both types of receptors, leading to greater sensitivity.
This might also explain why some people do not like their feet ...