Pedro isn’t very good at running, ends up on his butt

Pedro was running. He was dribbling. He was being athletic.

And then he was on his butt.

Pedro, apparently, forgot how to run. It is a complicated act in which a person puts one foot in front of the other, but they do so as quickly and with as much force as possible. It’s difficulty is so high that people don’t often do it until they reach the age of two.

Thus, he is on his butt.