[MVorlm]

To be clear, ELI5 isn't a "meme" nor does it mean literally explain something to an actual 5 year old[1].

In reality, it means explain something in plan language without insider terms/definitions.

[1] https://www.reddit.com/r/explainlikeimfive/ (See: sidebar)

[yreg]

It is a meme in Dawkins' sense.