表达 “not know where to put oneself（不知道该把自己放在哪里）” 用来形容 “某人非常不自在或尴尬”，有时也表示 “局促不安”。

• That comedian was really bad. His jokes were so awful, I didn’t know where to put myself.
  那个喜剧演员真的不怎么样。他讲的笑话很没劲，我都不知道是该笑还是哭。
• When she rejected his proposal in front of the whole restaurant, he didn’t know where to put himself.
  当她在餐厅所有客人面前拒绝了他的求婚后，他尴尬得无地自容。
• Was my singing that bad? You don’t look like you know where to put yourself!
  我唱得有那么差吗？你看起来特别不自在。