Actually, it's just stuff that shows up on my Facebook feed. It's scary out there.
It sure is. I was doing a search for parenting of teenagers memes on my smartphone, and I have no idea what I hit, but a bunch of porn gifs showed up. Ugh! Then I couldn't get rid of them. (I finally did.) My friends have reported similar experiences on their phones. Now I do searches only on my computer (i.e., not a touchscreen, so I can key in what I want).