Moving on to a big kid bicycle is a hard enough change for a mom, but now pair it with a four year old's decision on our purchase of new undies to go with the boxer briefs. I never imagined there would be a transition such as this, but I have to say it was an odd experience. When he moved from diapers to big boy underwear I had no moment of sadness that my baby boy was growing up, I was just glad to have one less bottom to change (his sister was about 6 months old when he was done with diapers). But as he ran around the house in his new little boxer shorts I couldn't believe how much he seemed to no longer be my baby, my toddler, my preschooler. In so many ways he had become a little boy. A wild little boy full of energy, excitement, wonder, a little selfishness and apparently "normal" little boy violence, but still he is quite a little boy. Why a pair of boxer shorts has caused me to have this reflective thought, I have no idea.
Take note What to Expect books sure don't tell you about all the seemingly insignificant things that will feel like huge milestones to you, nor do they tell you about all the small things that you will miss. Cherish the days of little Thomas undies and squeaky wheeled tricycles.