Scraping your nails on the chalk board electrocutes your brain.
tbh im not sure if this is right and I'm sorry if it is wrong
Answer:
It reveals Johnny has more to him than what meets the eye, and he is a very sensitive person.
Explanation:
^^
I'm guessing the word that is italicized capacious because in this case it is synonymous with vast, meaning that he has a developed mind with broad views.