So I was playing around with a "How tall will my child be" calculator online, and this is what is foreseen for my kids :o) Kind of fun to play around with...
Dirk will look me in the eyes when he is 11 years old (5'7") - AH!
Dirk will look his dad in they eyes when he is 15 years old (6'6") - Wow. He'll grow 11 inches in 4 years, huh? Ouch.
He will stop growing when he is 6'7".