After swimming in my in-laws’ pool, I usually take a shower, put on a robe, and then go upstairs to the spare bedroom to get dressed. Once while on my way to get dressed, my mother-in-law, who doesn't swim, stopped me when no one else was around. She started talking to me while she was sitting and watching the others swim. She asked me jokingly if I had anything on underneath the robe. When I said, "What do you think?" she said, "Let me check." She put her foot under my robe and rubbed my bare junk. It's definitely odd, but I have to admit that I liked it.