4chan memes are a unique aspect of internet culture that originated from the imageboard website 4chan. These memes often reflect the site's anonymous nature, allowing users to create and share humorous content without the constraints of identity. Popular formats include image macros, reaction images, and various catchphrases that have become iconic within online communities. The memes often draw on a mix of absurdity, irony, and dark humor, making them distinct from mainstream memes. Notable examples include Pepe the Frog and the Feels Guy, which have transcended 4chan to become widely recognized symbols in internet culture.