I don’t know how old I was but I remember being in a crib and using the side rail to pull myself up to stand. My parents were asleep, they’d go out dancing on Friday and Saturday nights (1950’s). I knew if I cried they’d get mad so I said “Hoo-Hoo! Hoo-Hoo! They laughed and took me downstairs to Grandma and Grandpa. Babies are smarter than most people think.