My four-year-old son was out of control. He tried to climb EVERYTHING, he made crazy yelling noises all the time, he had about a ten-word vocabulary, and he slipped out of his room every night to sleep with his pet jungle cats.
And it was all his grandpa's fault.
I should have seen it coming the day my son was born. I held him in my arms, showed him to my father-in-law, and said, "Hey, Dad, ain'tcha proud?" And he just twinkled his eyes at me, and ran his hand through his dreadlocks, and grunted bemusedly to himself.