The 67 Hand Sign (or 6 7 Handshake) originates from the UK drill scene, specifically associated with the Brixton-based rap group 67. The gesture involves forming the numbers six and seven with the fingers, a move that transitioned from a musical group identifier to a viral social media trend on platforms like TikTok and X. In internet culture, the template is frequently used to symbolize a deep, unspoken bond between friends or to represent the moment two people realize they share a niche, specific interest. It serves as a visual shorthand for being 'in the know' or having an unbreakable alliance, often used in contexts ranging from gaming squads to workplace friendships.