Live life to how you want and make the fukking most of what you're given and you will turn out just fine.
the animator probably requested that this be put in the script because they were so excited that the boulder came out as great as it did so he wanted a little reward for himself… at least, that’s what I would have done…
Maybe they had a ton of trouble rendering the boulder properly and so when it was done they were like ‘You know what? This shit deserves a line in the script.’
As the daughter of a renderer, I can confirm this is pretty likely. :P