It was taken after Zachary had been rolling about chasing a ball with Ben's help, not yet mastering how to crawl or get to where he wanted to be despite Ben's best efforts to help him. Ben was being very patient and encouraging with his little brother yet I could see he was thinking "will he ever just crawl", while poor little Zachary was close to frustration point, annoyed that every time he got to the ball it just rolled away again.
