No, it turned out I had gotten "Porned" by someone. No idea when that happened, but as fo three days ago it wasn't the case. One of the tags I tested was "Shebeen Club" which as far as I know is unique to my blog: No results at all. That's how I figured it out.
Anyway, Support took a look at my blog and "un-porned" me immediately, all hail Support dudes and dudesses! It's a bit annoying that I still don't know exactly what the misconception was, and annoying that "porning" happens without someone actually checking up on the report, but at least the "un-porning" happened very quickly. Can't say enough good things about that!