The passengers from the respective coaches would swap news whilst waiting for the change and it is from this that the phrase "cock and bull story" is said to have originated.

各自车上的乘客会在等待期间相互聊天交换信息，据说这也就是俗语“公鸡和公牛故事”的最初起源。

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While "Cock" was about power plays within a sexual triangle, "Bull" presents bizarre power plays and one-upmanship within a tense office situation wherein one of three employees is allegedly going to be fired.

WSJ: Review: Mike Bartlett waves red flag with 'Bull'