全世界背叛了我一起背叛全世界
[quán shì jiè bèi pàn le wŏ yī qĭ bèi pàn quán shì jiè]
The meaning is 'if the whole world turns against me, I will betray the entire world'. It represents a retaliatory attitude against unfairness, expressing a negative mindset that comes from experiencing betrayal.