In informal British English, if you are shagged you are extremely tired — no energy left after work, sport, or a long day. People also say shagged out.

In informal British English在英式口語中, if you are shagged如果你是 shagged, you are extremely tired就是說你累到不行 — no energy left after work, sport, or a long day工作、運動或忙了一整天之後完全沒力氣了。 People also say shagged out大家也會說 shagged out。

It is not a polite word. It comes from a rude verb about sex, and then people used it for being worn out, the way that kind of slang and tiredness often mix.

It is not a polite word這不是一個禮貌的字。 It comes from a rude verb about sex它源自一個講性行為的粗俗動詞, and then people used it for being worn out後來被拿來講「累壞了」, the way that kind of slang and tiredness often mix這種粗話跟疲累常常會混在一起用的情況很常見。

Younger British speakers say it with friends. You would not write it in a school essay, and you would not say it to a teacher or to someone you have just met. American English hardly uses this tired meaning, so a US film may not help you here.

Younger British speakers say it with friends比較年輕的英國人會跟朋友這樣說。 You would not write it in a school essay你不會把它寫進學校作文裡, and you would not say it to a teacher or to someone you have just met也不會對老師或剛認識的人這樣說。 American English hardly uses this tired meaning美式英文幾乎不用這個「累」的意思, so a US film may not help you here所以看美國電影可能學不到這個用法。

Though actually, if you only need very tired, exhausted will keep you safe; knackered is also British and a little less sharp. There is another, older English shagged that meant covered in rough hair. That is a different word with the same spelling, and it is not this sense.

Though actually, if you only need very tired不過其實，如果你只是需要表達「很累」, exhausted will keep you safe用 exhausted 就很安全; knackered is also British and a little less sharpknackered 也是英式用法，語氣稍微沒那麼刺。 There is another, older English shagged還有另一個比較舊的英文字 shagged that meant covered in rough hair意思是「長滿粗毛的」。 That is a different word with the same spelling那是拼法相同的另一個字, and it is not this sense跟這裡講的意思不一樣。