Jumping jack

Definition and stakes

Portrait of George Bird Grinnell George Bird Grinnell,  Jack, the Young Ranchman: A Boy's Adventures in the Rockies

“ If both of 'em are the same size they may keep that up for an hour or two, but if one is considerable bigger than the other, he will push the little fellow back, slowly at first, but gradually faster and faster, until he gets a side push on him, and then the little fellow's got to be mighty spry, to get out of the way before the big one hits him with his horns."
"It must be great to see a fight like that," said Jack.
"Well, you'd think so; two big animals and with big horns like that, but really, it ain't much fun; they fight so slow; there's no jumping around, no quick work.
”
Source: Gutenberg

Portrait of Joseph Jacobs Joseph Jacobs,  English Fairy Tales (1890)

“ Then I will tear thee with my teeth, suck thy blood, and grind thy bones to powder."
"You'll have to catch me first," quoth Jack, and throwing off his invisible coat, so that the giant might see him, and putting on his shoes of swiftness, he ran from the giant, who followed like a walking castle, so that the very foundations of the earth seemed to shake at every step. Jack led him a long dance, in order that the gentlemen and ladies might see; and at last to end the matter, ran lightly over the drawbridge, the giant, in full speed, pursuing him with his club.
”
Source: Wikisource

Frank V. Webster,  Jack the runaway; or, On the road with a circus (1909)

“ Suddenly there was a ripping sound, and the big umbrella turned inside out. Jack fell rapidly and heavily toward the earth, having no support to break his terrific fall.
As he landed, his hand unconsciously pulled the strings and the shot was fired, the flags fluttered out, and the rooster crowed. The crowd yelled and applauded, but poor Jack felt a pain in his left [192] leg as if some one had run a red-hot iron into it. Then it seemed as if some one had hit him on the head with a club. The lights, high up on the tent poles, died away. All became black, and Jack knew nothing more.
”
Source: Gutenberg

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