A childhood belief about sport

When I was six I joined the local football (soccer) team. I knew we had red shirts, but when the first match I was to participate in arrived everybody put on blue shirts. Of course this was because the other team had red shirts as well. Because I had only been to one practice session and really didn't know or remember anybody since I was very shy (I still have a slight problem with names and faces for some reason), I thought the blue shirt meant that I had ended up on the wrong team. Being a little unsure if this was the case, and worried that I might let my actual team mates down, I kept a very low profile on one of the wings, making sure to stay away from the ball at all times, so I wouldn't make anyone mad by putting the ball in the wrong goal, which could be either one.