Man oh man, do I have a tricky one. I may have posted it here a long time ago but I can't remember.
A few years back in my Junior English class we were on computers working on a final, and my friend as usual is not working om anything. She was on a fanfic site, I can't remember the exact name. She was so shocked by one of the stories that she started telling me about it. Out loud.
Just my luck, she comes across a TBDL story. She stares at me, wide-eyed anf shocked, says "wow, there's this school of all girls, and they make them wear diapers..." At this point I was just stone-faced at that d-word. She continues on..."and at this school they actually make them USE the diapers..." at this point I was just holding back laughter. All I could say was "yeah...it's not unheard of, I'll talk more about that later". That night I IMed her and explained my fetish and all she did was laugh.