r/memes (not to be confused with r/meme) is a subreddit about memes. It is in the name so there is no point of well describing it. The rules can be strict and you can be banned so be aware of your actions! The description is "Memes! A way of describing cultural information being shared. An element of a culture or system of behaviour that may be considered to be passed from one individual to another by nongenetic means, especially imitation."