The father offered his son the following deal.
“You bring your grades up from a C to a B average, study your Bible a little, and get your hair cut. Then we will talk about the car.”
The boy thought about that for a moment, decided he’d settle for the offer, and they agreed on it.
Six weeks later his father said, “Son, you've brought your grades up, and I've observed that you have been studying your Bible, but I’m disappointed you haven’t had your hair cut.”
The boy said, “You know, Dad, I've been thinking about that, and I’ve noticed in my studies of the Bible that Moses had long hair, Samson had long hair, John the Baptist had long hair, and there’s even strong evidence that Jesus had long hair.”
Got to love Dad’s reply: “Did you also notice they all walked everywhere they went?”