Why does two bit have a butterfly knife in the outsiders?

Two-Bit Mathews carries a butterfly knife in "The Outsiders" as a symbol of his tough, rebellious persona and street credibility. The knife represents his connection to the Greaser identity, showcasing his readiness to defend himself and his friends. It also serves as a tool for self-expression and a reflection of the gang culture they are part of, emphasizing the themes of loyalty and survival in a challenging environment.