You look like something the cat dragged in.

(你就像猫拖进来的东西一样)。

youdao

What on earth have you been doing to get your clothes so filthy? You look like something the cat dragged in.

你们到底在做什么，把衣服弄的这么脏？看起来就像是猫拖进来的东西。

youdao