[mistermann]

Depends on which definition of meme you're using:

- a humorous image, video, piece of text, etc., that is copied (often with slight variations) and spread rapidly by Internet users.

- an element of a culture or system of behavior that may be considered to be passed from one individual to another by nongenetic means, especially imitation.

The former refers to things like the sometimes clever pictures you see on social media, the latter refers to things like what you read in the newspaper (often referred to as facts), but both kinds have widely varying levels of truth.