Memes

A meme is an idea, behavior, or style that spreads by means of imitation from person to person within a culture and often carries symbolic meaning representing a particular phenomenon or theme.
Wikipedia
An Internet meme, or meme (/miːm/), is a cultural item (such as an idea, behavior, or style) that spreads across the Internet, now primarily through social media platforms. Internet memes manifest in a variety of formats, including images, videos (e.g. GIFs), and other viral content. Key characteristics of memes include their tendency to be parodied, their use of intertextuality, their viral dissemination, and their continual evolution. The term meme was originally introduced by Richard Dawkins in his 1976 book The Selfish Gene to describe the concept of cultural transmission of a singular unit, analogous to biology.
Wikipedia
