Actually, to many adults who have heard of the word "meme" it may mean "an idea, behavior, or style that spreads from person to person within a culture", the intellectual equivalent of a biological gene -- not the newfangled meaning that the kids have hijacked the word for, "one of those silly pictures with text on". (Funny, didn't we already have terms for that? Poster, postcard...?)

It was originally coined by Richard Dawkins (way back, before he went senile); perhaps in _The selfish gene_. HTH!