Evan, apparently the bikini's are crotchless and have spots up top to show nipples. Which suggests a pornographic image.
I'm gunna go ahead and defend him though, since it was only open for a few seconds before it was closed. Same goes for the video of the dog. I've almost had similar things happen in classes where I wasn't expecting something from the title of the email, then suddenly, well lets just say I'm lucky I always sit in the back of classrooms, or I'd forever be known as that guy looking at really weird **** in class.