When I was in high school I was assigned to a table in study hall with one of the cheerleaders who was also one of the hottest girls in school. I would actually whip off (at home, of course) thinking of tickling her feet. One day she told me that she had a run in her stocking and asked me if I wanted to see it. I said sure. She lifted her foot up to me with her toes curled back to expose a run in her stocking that ran from her heel all the way through her arch to the ball of her foot. I impulsively grabbed her foot and started tickling it and she began laughing. To my embarrassment my football coach who ran the study hall yelled at me and asked me if I were crazy. That embarrassed the crap out of me.