Merciless tickling of her big bare feet

We have borrowed some stocks and though about which of our girls to torment a bit. Who is ticklish the most? Our choice fell to Ginger. She has very BIG feet, sexy soles and she is ticklish! But not everywhere on her feet, I had to dig deep to find her weak points and tickle those. Some sort of tickling didn't even moved her but some other...boy she can even enjoy her own suffering. It seems to arouse her to be tickled on soles. The mic of impotence and tickling and pleasure, she would do it again she says :).