Hayley教口语，“死定了”用英语怎么说？

 be dead meat 

The saying 'I am dead meat' means I am in big trouble. Perhaps because you did something wrong.

I am dead meat这个说法的含义是指我会有大麻烦。也许是因为你做了错事。

Can you keep a secret? I 'll be dead meat if my dad finds out I was the one who broke his golf club.

你能保守秘密吗?我爸要是知道是我把高尔夫球杆弄断，我就完蛋了。