Huckleberry Finn by Mark Twain Chapter 39 Page 15

They will sneak down from northards, along the fence, at midnight exact, with a false key, and go in the nigger’s cabin to get him. I am to be off a piece and blow a tin horn if I see any danger; but stead of that I will BA like a sheep soon as they get in and not blow at all; then whilst they are getting his chains loose, you slip there and lock them in, and can kill them at your leasure. Don’t do anything but just the way I am telling you; if you do they will suspicion something and raise whoop-jamboreehoo. I do not wish any reward but to know I have done the right thing.