I am not surprised that this happened, and I think @Abu3baid
is wrong to say that most "normal decent people" wouldn't take such pictures. Its much more common than that. Not that long ago the media loved to cover the "sexting epidemic"
But I am surprised at how dirty some of them are. Most are the standard mirror selfies...but a few are...I don't know...maybe "gross" is the right word.
And if the ones you saw were all grainy...you saw different photos than I did.