One and a half examples as a ler. I think both have been posted before.
2) dating about 9 years ago met a woman who volunteered in the "getting to know each other" phase that her feet were too ticklish to touch. Fast forward to first date, and watching a movie at her townhouse after dinner. She asked me to try tickling her feet. With socks on, she was extremely ticklish. Barefoot was much more ticklish. The next night, she asked me to come over, even though I had been playfully teasing her throughout the day about how ticklish she was. Watching "Raiders of the Lost Ark", she was already barefoot and I playfully tickled her. When I stopped, she pushed her foot into my hand. For the remainder of the movie, I was basically tickling her low level constantly. Only her feet. After the movie ended, she point blank told me she wanted me to tickle her more. As I was tickling her feet sitting on the edge of the bed with my back to her, her tone clearly changed, and she wanted me to tickle more. I did, and within a couple of minutes she was very obviously hitting an intense climax. No genital contact at all, her hands were behind her supporting her body to stay upright. The only physical contact was my fingers tickling her bare feet.