Well you were insinuating that I posted this to pad my post count. I've been a member here since 2003. Granted I mostly lurked for many years, but if I truly wanted to pad my post numbers, I'd be making every single tweet into a new post.
Safety. A team can try for a field goal, and if they miss, the team on "defense" can catch the ball, and take a safety. Remember, the goal posts are on the goal line, so safety's are a common occurrence.