The 'Citizen Kane Clapping' meme is a legendary reaction shot featuring Orson Welles as Charles Foster Kane enthusiastically applauding during a stage performance in the 1941 masterpiece 'Citizen Kane'. While the scene originally depicts a genuine show of support for his wife's lackluster opera debut, the internet has repurposed it as the ultimate expression of sarcastic or ironic approval. It is widely used in forums and social media to mock someone’s subpar effort or to celebrate a very niche achievement that only the creator appreciates. Its longevity stems from the sheer intensity of Kane's expression, making it the gold standard for 'slow clap' memes across the web.