Here's a sweet moment: this video from the U.K. shows a father's extremely positive reaction when he finds out his son has received a higher-than-expected grade on his report card.

"I have never been amazing academically and have struggled throughout school," the young man, whose YouTube user name is ariamark, wrote in the video's description. He says he was "at a grade F" in mathematics the year before the video was shot — but he managed to get his math grade up to a "C". To capture his father's reaction, he placed a hidden camera in his kitchen and filmed himself sharing the news.

In the U.K., ariamark writes, "you need a C (pass) to basically do anything with your life." The C grade also means he will no longer have to take math classes, which leads his dad to joke "you're set for life."

"Neither me or my dad or my teachers thought I was going to get my C," he writes. His dad certainly seems shocked — and also overjoyed.

And for anyone who doesn't consider a C impressive, the young man has a message: "I know some of you might be saying, well an C is nothing but for me it was hard to get."