It's a very old-fashioned American oath. A horn spoon is just a spoon made out of horn, like cow's horn - people used to carve their own spoons back before mass industry made cheap metal eating utensils. There have been hints that the saying originally referred to the Big Dipper, and was used by sailors.
The first record of this saying was in a song from 1842 called "French Claim" -
The more he thought on't it the madder he grew,
Until he vowed by the great horn spoon,
Unless they did the thing that was right,
He'd give them a licking, and that pretty soon. It doesn't really mean anything other than "I swear" - but you know how Americans love using five or six words when one will do just fine!
It means youll win
nothing happends
In the audiocast of By the Great Horn Spoon, the part of the miner with the toothache was voiced by Frank Fiumano. He also voiced the parts of the hotel clerk and a passenger.
In the cabin
Isk
Harsh
to old
to old
Eric Von Schmidt illustrated the book, Great Horn Spoon.
Tan
Man full of stuffing
Oh, dude, Jack keeps his gold dust in the great horn spoon, like, obviously. I mean, where else would you keep your precious gold dust if not in a great horn spoon? It's the perfect hiding spot, right next to the cereal in the pantry.
he does not go around the horn!
it is fiction
It means youll win
The Gold Rush. Obviously.
Constance & Sarah