指双方达成一种私下的互相帮助的默契：我为你提供方便，以后你也得帮我的忙。

• If you help me with this report, I’ll cover your shift—you scratch my back, I’ll scratch yours. ^{如果你帮我写报告，我就替你值班——咱们互惠互利。}
• The two politicians often help each other; it’s a case of “you scratch my back, I’ll scratch yours.” ^{那两个政客经常互相提携；这就是典型的“你帮我，我帮你”。}
• In this business, it’s often “you scratch my back, I’ll scratch yours.” ^{在这个行业里，大家经常互相照应。}