Jack in the box?

[dina]

Test No. incompl/inter-57 "A Night Out", question 9

And the sound is much greater too. During the war scenes I was jumping up and down out of my seat like a ......... in the box at every explosion.

(a) John
(b) Jack
(c) Jim
(d) James

Test No. incompl/inter-57 "A Night Out", answer 9

And the sound is much greater too. During the war scenes I was jumping up and down out of my seat like a Jack in the box at every explosion.

Correct answer: (b) Jack

Your answer was: incorrect
And the sound is much greater too. During the war scenes I was jumping up and down out of my seat like a John in the box at every explosion.
_________________________

Hi Alan,

And the sound is much greater too. During the war scenes I was jumping up and down out of my seat like a Jack in the box at every explosion.

why the answer is Jack not John

[Torsten]

A jack-in-the-box is a toy that consists of a clownlike puppet that springs out of a box when the lid is activated.
That's where the expression to jump like a jack in the box originates from.

TOEIC listening, talks: Announcing the opening of a summer open air drama festival