I had no idea what ELI5 is either, but after asking $searchengine I have no idea why your post is at reduced saturation. It's either a) extremely funny, or b)

I had no idea what ELI5 is either, but after asking $searchengine I have no idea why your post is at reduced saturation. It's either a) extremely funny, or b) shows that you are too lazy to search (like many are, myself included), or c) an experiment to verify the karma gain through posts asking for an explanation. The most likely explanation for the downvote I can think of is that the downvoter perceived it as c) and wants to mess the result of your experiment.