One of the most striking aspects of the Avenue Q libretto is its willingness to tackle mature themes with unflinching honesty. The musical's frank discussions of sex, relationships, and body image are both humorous and heartfelt, making for a refreshingly authentic portrayal of young adulthood. The character of Princeton, the musical's protagonist, serves as a perfect example of this. His journey from wide-eyed optimism to disillusionment and self-discovery is both poignant and relatable.