Happy 17th Birthday, Son

It doesn't take very many years to go from being a proud Dad, to an idiot.
What parent isn't an idiot to teenaged eyes?

Hopefully, the reverse process will take less time.

When I was a boy of 14, my father was so ignorant I could hardly
stand to have the old man around. But when I got to be 21, I was astonished at
how much the old man had learned in seven years. - Mark Twain