The song "Duke Nukem" by Upchurch is a diss track aimed at a specific individual. The lyrics express Upchurch's frustration with this person, criticizing their music, appearance, and behavior. Upchurch mocks them for imitating popular rap songs, using Rhianna's name in a song, and copying his own lyrics. He also calls out their unsuccessful attempts to gain attention and provoke a response from him on social media. The song is filled with insults, wordplay, and clever punchlines, showcasing Upchurch's skill as a rapper. He compares himself to the coach of rap, making his opponents laugh while he continues to succeed. Upchurch dismisses the diss track made against him, stating that it failed to make any impact. Upchurch goes on to further insult his adversary, questioning their talent, appearance, and musical style. He uses derogatory language and imagery to belittle them. He also boasts about his own success, mentioning his chart-topping albums and accomplishments. Towards the end of the song, Upchurch addresses the individual directly, challenging them to bring their best in a rap battle. He asserts his dominance and criticizes the state of the rap industry, claiming that most rappers produce mediocre and unoriginal music. Ultimately, "Duke Nukem" serves as a response to the diss track against Upchurch, showcasing his lyrical abilities and confidence as an artist.