社死
shèsǐ
Literally says
social death
Actually means
public embarrassment so bad you want to vanish from earth
When to say it
Waved back at a stranger who was waving at someone behind you. Sent the complaint about your boss to your boss. That is shèsǐ. Say it right after your own disaster, laughing through the pain. Everyone has a story, so it bonds people fast.
Hear it in the wild
我发错群了，当场社死。
Wǒ fā cuò qún le, dāngchǎng shèsǐ.
I sent it to the wrong group, instant social death.
裤子拉链没拉，社死现场。
Kùzi lāliàn méi lā, shèsǐ xiànchǎng.
My fly was open the whole time, total humiliation.