Around 2003, I was on a short vacation in the South of France, near Cap d'Agde, the (in)famous nude resort. I stayed at a campsite in Marseillan-Plage, to the North of the resorts. I like to walk the beaches but wearing thongs was quite new for me so I avoided the busy spots. One day, while walking along the surf, somebody called my name. I turned and saw one of the secretaries of the company I worked for. In my work I was quite formal so she was very surprised to see me in a thong. I never would have thought that of you, was the first thing she said. We talked for a few more minutes about the usual things as the weather, the location and so on. Then we split and went our ways.
The next day I walked in the direction of the nude beaches. I felt already more comfortable in a thong so I wore a smaller one. Halfway the nude section I saw the secretary of yesterday sunning nude on a towel. Next to her was a guy I saw the day before at some distance from the girl. The secretary was married but not to this guy. I said hello and before she could react, I said:"I never would have thought that of you." She was quite disturbed by my discovery but we talked a little and then I walked back.
After my first encounter I was afraid the girl would tell the whole company about my thong wearing but after I saw her with another guy, both events stayed secret.