Final answer:
Jimmy Fallon's persona when he is outside the White House can best be characterized as humble and appreciative. He is known for his friendly and down-to-earth nature.
Step-by-step explanation:
Jimmy Fallon's persona outside the White House can best be characterized as humble and appreciative.
Unlike an authoritative and stern persona, which would imply a sense of power and strictness, Jimmy Fallon is known for his friendly and down-to-earth nature. As a talk show host, he often displays a genuine appreciation for his guests and his audience.
While he may exhibit crazy and outrageous behavior during his late-night show, this is part of his comedic persona and should not be confused with how he presents himself outside of that setting.