谁把我当备胎我让他爆胎
[shéi bă wŏ dāng bèi tāi wŏ ràng tā bào tāi]
A very direct and strong statement that translates to: 'If someone regards me as a spare tire, I'll make sure their tires blow out'. It expresses the user's displeasure at being seen as backup in a relationship and warns against mistreatment.