One of the things I love most about photography is that while we're looking at a photo, we see a moment in time - for as long as we want to look at it. Things that normally happen so quickly that we don't even see them in real time, get frozen for inspection in a picture. Think about your very favorite pictures - I bet the vast majority of them are special because of this.
When I snapped this shot, all I saw were two kids about to kick the soccer ball at the same time. I certainly didn't see that precious face she is making, biting her tongue and closing her eyes. Classic!