The song "I Used To Be 20" by Guttermouth expresses a sense of disillusionment and cynicism towards the world and the speaker's personal experiences as they grow older. In the first verse, the lyrics suggest that the speaker was once filled with optimism and admiration for the world. However, their perspective changed after listening to the words of leaders (possibly political or authoritative figures) which influenced their outlook on life. This could imply disappointment or frustration with the way society is being governed or led. The second verse reveals that the speaker used to enjoy spending time with friends, but their perception changed when their friends advised them to split or separate. This could represent a major turning point in their life, causing tremendous emotional distress or feeling of loss. Repeating the line "I used to be 20" throughout the song emphasizes the theme of growing older and the transformative impact it has on one's perspective, choices, and appearance. The chorus implies that the speaker used to enjoy watching horror shows and embracing the darker side of entertainment. However, now they consider themselves to be part of that horror or darkness, possibly indicating a shift in their own behavior or mindset. The lines "When I go out the people stare, cause I look like a psychopathic killer" suggests a change in the speaker's appearance, demeanor, or attitude that elicits negative reactions from others. This could be a metaphorical representation of how the speaker's experiences and disillusionment transformed their outward appearance and demeanor. Overall, the song reflects a feeling of disappointment, loss of innocence, and the complexities of growing older. It explores themes of personal transformation, the influence of authority figures, and the impact of societal perceptions.