The song "On Fire" by Eminem is a metaphorical and aggressive track where he addresses his critics and expresses his frustration with them. He starts by mentioning that critics never ask him how his day went and proceeds to unleash a series of intense verses filled with wordplay, insults, and graphic imagery. The song starts with Eminem talking about his dog dying and then jokingly mentions tying up a woman. He challenges his critics to try and criticize him more, expressing his fatigue with their constant negativity. He mentions his anger and compares himself to Ghost Rider and Spider-Man to emphasize his intense nature. Eminem also criticizes other artists like Flo Rida. Eminem's lyrics become more violent as the song progresses. He talks about getting rid of his critics and haters, comparing them to wounds and salt. He even mentions cutting out their livers, gizzards, and balls, displaying his anger and aggression. In the chorus, he acknowledges that he is "on fire" and plays on the phrase to convey his superior skills and confidence. He uses wordplay to create multiple meanings, symbolizing his dominance in the rap industry and his ability to ignite excitement and controversy. Eminem then takes a dig at Brooke Hogan and David Cook, warning them about his rap skills and dominance in the industry. He boasts about his talent and popularity, contrasting it with others who may only have temporary fame. He likens himself to lightning, emphasizing his quick wit and sharp lyrics. The song ends with Eminem being confrontational, imagining himself attacking a blind man with a coloring book and threatening a homeless Vietnam veteran. He showcases his brutality and erratic behavior, emphasizing his unhinged state of mind. Overall, "On Fire" is a fierce and aggressive track where Eminem expresses his frustrations, boasts about his skills, and delivers intense wordplay. The lyrics are filled with controversy, vivid imagery, and provocative language, showcasing Eminem's unique style and storytelling ability.