Memejacking

The term "memejacking" refers to using a meme to hijack another meme. The idea is broadly similar to retromemes - but "memejacking" is used more as a verb: so the act of making a retromeme is known as "memejacking".

The "memejacking" meme then uses the energy and resources of the "memejacked" meme to help it to spread.

"Memejacking" can be usefully thought of as being a contraction of "memetic hijacking".

The word seems to date back at least to 2002.