Eldonics means: Slang is a term or set of words used by people from “Great Generation”, the “Silent Generation” and “Baby Boomers” in order to explain a situation, noun or verb that older generations may have misunderstood.

Eldonics are phrases like “It’s pouring cats and dogs” or “Your barn door is open”.

Also, Eldonics includes the suffix “Itty” before words that rhyme with it. The following slang terms are also incomplete: “dem”, “der”, and so on.

Also, Eldonics can also include misinterpreting words like “Indian”, to be pronounced as “Engeeine”, en-jeeuhn.

Prefix comes from “Elder”, and suffix from “phonics”.
(in Open Dictionary, added by Allyson Duarte)