There is a clear distraction in this picture. Once you get pass the distraction then you will see what is action going on here. Most people especially men are staring at on thing and one thing only initially. Pretty sure their face pretty much looks something like this...
Once you get pass sea-foam green shorts you will see the real reason why this picture went viral! Look at the men's faces behind the girls! OHHHH!!! Now you see it! LOL