The Manly Handshake meme originates from a scene in the 1987 action film Predator, featuring characters Dutch (Arnold Schwarzenegger) and Dillon (Carl Weathers). The shot captures an intense, mid-air bicep-flexing handshake that signifies a meeting of equals. In internet culture, the template is used as a 'mutual agreement' meme, where two disparate or even rival entities find common ground on a specific topic. It first gained significant traction on platforms like Reddit and Tumblr around 2012, eventually evolving into various artistic renditions and labels to mock or celebrate shared niche interests.