Funny story. When I was a kid, my parents used to keep envelopes with photos in them (before digital) in their night tables, and one day I was going through the photos, looking for something. I came across a g-string, but I had NO idea what it was, I asked my mum if it was a "one boob bra". Her answer was 'GET OUT OF THERE!!!!'
Years later I figured out what it was and was totally grossed out!