antimeme

Meanings

1. A meme deployed to nullify or protect against another meme.
2. A unit of information that prevents itself from being spread, either due to its contents, (e.g, a password or encrypted document,) or a secondary mechanism that prevents its transmission. (e.g, by erasing itself from any mind that it enters.)
3. An image macro which intentionally subverts one's expectations by not including a joke; a meme antijoke.

Etymology

From anti- + meme. In the sense of "an image macro which intentionally subverts one's expectations", first recorded in 2009 and now chiefly associated with the r/antimeme subreddit, created February 8, 2012.