Seems like a lot of these sayings have been based on true life people, or happenings in the past, and will be a story behind them. Take nursery rhymes for instance "Ring a Ring a Roses" everyone knows was based on the symptoms for the plague or was it smallpox ?
Maybe our descendants in about a century will be asking the same question here and wondering how sayings came about. Can't just think of any off the top of my head, except seeing as we have a thread about this particular person at the moment maybe they will be quoting. Been for a Hugh Grant. Sorry, maybe that should really be in the 18's
Anyway, is fun speculating future sayings from characters of today.