你一枪崩了我还说是枪走火
[nĭ yī qiāng bēng le wŏ hái shuō shì qiāng zŏu huŏ]
Literal meaning is 'You shot me and called it an accident?' This nickname reflects on betrayal where trust was completely broken by the person being referred to. Can imply a deep sense of shock and anger.