Ari is doing a science project at school on touch and sensitivity and her favorite body part is the foot so of course she wants to experiment with different kinds of stimuli on feet and what evokes the strongest reaction. She enlists the help of her aunt Brandon and her sexy milfy wrinkly soles. First she has her in suntan sheer pantyhose, applies baby oil to one foot and not the other and begins her experiment and gets wonderful results! Brandon's feet are super sensitive and she is laughing like crazy. Always the good little scientist, Ari continues and changes the variables and soon has Brandon barefoot and tries all different types of textures on her feet to see which evokes the most laughter.