“落汤鸡”，中文俗语，字意为落水或浑身湿透的鸡(a drowned chicken;a chicken in the soup)，现在形容被雨水浇得浑身湿透(be caught in the rain and soaked through)，极其狼狈的样子。
与英文短语“be like a drowned rat”意思相近，表示“to be very wet, especially because you have been in heavy rain”。
例句：
天哪，你都成落汤鸡了。你的车呢?
My goodness, you're soaked through. Where's your car?
他浑身湿得像只落汤鸡。
He was wet all over like a drowned rat.