We tend to think we’re better at something than we are, at least in the beginning. This new father became one of those arrogant people who thought he could run around and brag about how good of a dad he is. Because he thought he was a hot shot, he offered to change the baby’s diaper.
In a matter of seconds, the baby managed to humble him by peeing on his face and pooping all over his hands. That sounds extremely unpleasant and is certainly one way to learn your lesson. At least this dad took this lesson and felt grateful for it. He still has a lot to learn, but at least he’s on the right track (via Constative).