not know where to put oneself

 挖条地缝钻进去

►含义：

to feel very embarrassed

感到非常尴尬

►例句：

When Lucy rejected his proposal in front of everybody, Tim didn’t know where to put himself.

当lucy在所有人面前拒绝了他的求婚后，Tim尴尬得无地自容。

►对话：

A: And then your boyfriend started to sing. 

接着，你男朋友开始唱歌。

B: Well, I didn't know where to put myself.

呃，我真是恨不得挖条地缝钻进去。

►额外收获： 

1.reject: vt.拒绝

2.proposal: n.求婚