One summer I was at an extended family get-together. At one point I was sitting at a table with some cousins and their spouses. I forget how this came up in conversation, but I wanted to show my female cousin sitting beside me my appendectomy scar. Without thinking, I pulled down the waistband of my shorts. She exclaimed loudly and vehemently, "YOU'RE WEARING A THONG???!!!" Everyone else, who couldn't see it, just stared at me and said nothing (unusually for my family). She murmured, "Sorry" and looked away. I was pretty embarrassed. I don't know whether the others were amused or disgusted or what. I don't know whether anyone present has told anyone else. No-one has ever said anything about it.