Jacob's getting seriously old. He turns eight today. That's halfway to getting a driver's license! He's pretty excited about the birthday thing and very excited to be eight. You remember how it was as a kid. Once you hit eight, seven seems so childish and young. Kids who are still seven, all of a sudden are no longer your peer group, but instead "those little kids."I'm excited for him, but I'm feeling a little old myself now. He drags me right along with him, despite his bad math. This morning, as I dropped him off at school, he said, "Now, you're only nineteen years older than me." I replied, "No, actually I'll always be twenty and...