I am sure he was exciteed to see his dad. I almost always had that feeling when my parents came to pick me up until I got into high school. I felt embarrassed everytime my dad came to school to visit. He rode me to school each time i had a national exam. He will check en ensure that i had everything for the exam. During the break, he will come back to achool and will bring me lunch. It was just an excuse because I already had lunch with me. He did that for all my national exam including the baccalaureate. At that time I was very embarrased. Later i realizes that i have was so lucky. I had the coolest ,loving, caring Dad ever.
Keep doing what you doing with your son. Those are great moment and reward that stay with us forever