This is kind of scary.

There's a list here of "42 hilariously inappropriate children's books you'll want to read."

And, because I don't like to make assumptions - because, how easy would it be to just mock up a cover for an inappropriate book in Photoshop - so I randomly selected one to look up, just to make sure it's for real.

And, indeed, this one is.

As is this one.

And this.

I can't speak for the others. But yeah...they'll publish anything nowadays...