This dad couldn't be prouder. From The Washington Post's The Answer Sheet:
Here’s a video that went viral showing a father in Britain reacting strongly when he learned that his son had gotten a ‘C’ in math — which is a passing grade — after first flunking it.
The dad is Farnoosh Shahrokhshahi and it was his son, Aria, who set
up a camera just before he told his dad about his grade and posted the
video with the title, “the day i passed maths.”
I don't think his son will forget how much this meant to his father.