To face-palm is to put the flat of your hand on your face — often over your eyes or forehead — because you feel embarrassed, disappointed, or shocked at how silly something was. Sometimes the silly thing is your own mistake; sometimes it is someone else’s.

To face-palmface-palm is to put the flat of your hand on your face就是把手掌平貼在臉上——often over your eyes or forehead常常蓋住眼睛或額頭——because you feel embarrassed, disappointed, or shocked at how silly something was因為你覺得某件事蠢到讓你尷尬、失望、或震驚。Sometimes有時候 the silly thing is your own mistake那件蠢事是你自己的錯；sometimes有時候 it is someone else's是別人的。

It can be a real movement or just a way to say “I cannot believe this.” The internet made the word common; you will also see it written facepalm, as one word.

It它 can be a real movement可以是真的做出這個動作，or just a way to say "I cannot believe this."或只是表示「我不敢相信」的一種說法。The internet made the word common網路讓這個字變得常見；you will also see it written facepalm你也會看到寫成facepalm，as one word合成一個字。

Informal: fine in messages and chat, too casual for a formal report.

Informal語氣：fine in messages and chat在訊息和聊天裡沒問題，too casual for a formal report但對正式報告來說太隨便。

Though actually, it is not hitting your face in anger. It is more like covering your face because the moment is painfully awkward.

Though actually不過其實，it is not hitting your face in anger它不是生氣打自己的臉。It它 is more like covering your face比較像是摀住臉，because the moment is painfully awkward因為那個當下尷尬到讓人受不了。