Recursion in the context of tagging refers to when an images and animations contain a smaller version of the same image, and that image contains a smaller version of itself in the same location, and so on and so forth, leading in to infinite smaller versions of that image. This is often caused by mirrors and/or computers also being present.

Examples:

post #2373109 post #1386531 post #2023873 post #1372840

See also:

• droste_effect