The Bonjour meme features a polar bear poking its head through a hole in a snowbank, accompanied by the French greeting 'Bonjour.' The image gained popularity in early 2019 after being shared on platforms like Reddit and Twitter as a reaction image. It is typically used to represent a sudden appearance, a polite interruption, or a sarcastic greeting in an unexpected situation. The high-contrast image of the bear against the white snow creates a clean, recognizable aesthetic that has made it a staple in reaction meme culture for years.