你的绿帽戴歪了
[nĭ de lǜ mào dài wāi le]
The green hat in China's slang means someone’s partner has been unfaithful. By adding ‘歪了’, meaning worn tilted, the speaker implies there's something visibly wrong about how people view your partner, perhaps suggesting cheating is blatant enough that the symbolism of wearing a metaphorical green hat is clearly seen as crooked or off-center.