Earlier threads on this here have traced saying ‘uncle’ as a way of acknowledging you’ve been defeated to two main theories. 1) Back in roman days boys would say something that translated to ‘uncle, my best uncle’ as a way of admitting the other was superior to himself and 2) it’s a corruption of an Irish word that is a call for protection.
Apparently the use of the phrase arose in America somewhere right around 1900, which has always made me suspicious. Why should American children suddenly start using a corrupted Irish word? One that apparently kids in Ireland itself didn’t use in that contest? And why a sudden outbreak of Latin knowledge among scuffling boys?
But yesterday I came across another theory that makes more sense to me, and amuses me. Apparently there was an English periodical and just around 1900 one of the bits and pieces published in it was a joke about a man who had bought a marvelous parrot. He was showing off its skill at mimicry to his friends, and became aggravated when the parrot wouldn’t repeat back ‘uncle.’ Supposedly he started beating on the parrot, screaming “Say Uncle, you beggar,” but the parrot wouldn’t. The man threw the parrot into a cage that also held a dozen chickens. When he checked later, he found that eleven of the chickens were dead, and the parrot was attacking the remaining chicken while screaming 'Say Uncle, you beggar!"
Anyway, this amuses me. The idea being that some children read, or were told, this joke and found it funny, and adopted it as a saying in their own fights. And that the source of the saying vanished from common knowledge while the saying lived on.
I bet this sort of thing is happening all the time, especially now with all the media exposure we have. You hear a phrase that amuses you, in a movie or TV show or a commercial or maybe a song lyric, and adopt it because it conveys your feelings about some minor type situation that arises.
How many of these phrases will live on long past anyone knowing where they came from?
Long in the future will some baffled Straight Doper post a thread asking, “Why do we say ‘Have fun storming the castle?’” and someone eventually replies, 'Well, two centuries ago there were these things called movies, and one of them was called…"
So, what are your nominees for sayings that will last past general knowledge of their source?