Cranky,
Size at birth has little to do with mature size.
Though I don’t remember it, my birth certificate clearly says that I was 6 1/2 lbs at birth and 21 inches long. I’ve since grown to a full standing height of 6’7" and weigh 255 pounds.
Huh? What do mean you were talking about something else? What else could you have been talking about? … Oh.
Never Mind.