Counting Teens

When Dad got home, Mom told him how Grafton's counting skills are coming along, and that he's able to reliably count from one to ten.  So Dad asked Grafton again, "Can you count to ten for me?"  So Grafton started counting again, but this time went, "fourteen, fifteen, sixteen, seventeen, eighteen, nineteen."  Dad was shocked, not realizing Grafton could count this high.  Earlier in the day, he had counted from fourteen to twenty for Mom, so she was a little less surprised, but enjoyed his double-digit counting just the same.