拔舌头 - Chinese Idiom

拔舌头:

Literally means:

pull out one's tongue; talk nonsense.

Actually means:

It is said in Chinese legend that when liars die, the king of Hell will have his teeth pulled out and his tongue cut off.

Now, this phrase is used figuratively to criticize someone for his talking nonsense.

据传说，说谎的人死后会被阎罗王敲掉牙齿，割去舌头。

后来，拔舌头便被用来批评或斥责某人胡说八道。