The Big Bang Theory memes primarily center around the quirky social dynamics and scientific jargon of the hit CBS sitcom. The most prominent figure is Sheldon Cooper, whose catchphrases like 'Bazinga!' and his obsessive-compulsive habits—such as his specific knocking pattern—became instant internet gold. These memes often mock social awkwardness, celebrate geek culture, or use Sheldon's intellectual arrogance to highlight ironic situations. Since the show's debut in 2007, it has fueled a massive wave of image macros and reaction GIFs that continue to circulate as symbols of nerd humor and classic sitcom tropes.