That’s Not His Hand
Here is a picture of two people expressing their happiness in a tennis stadium. In the background, people are walking around, sitting, doing their own things, so that’s not what’s wrong with this image. So let’s take another look.
Can you see it? As you can see, the man’s left arm is over the woman’s shoulder. But what is that between them? That’s a kid that did a proper photobomb by hiding behind the woman but close enough to pop his head in between the two adults and still be visible by the camera. The kid did a fine job from his skills in Photobombing 101 class.