如果一件事情 something goes down the pan 或者 something goes down the toilet，那意思是说这件事情完蛋了，被搞砸了。

例句

Mike had great dreams of becoming a rock guitarist, but they went down the pan when he injured his hand.

I'm afraid all that careful preparation we did for Meerka's surprise birthday party went down the pan when her sister told her about it.

He invested all his life's savings in a beautiful, antique car but everything went down the pan when he crashed it the next day.

请注意

短语 out of the frying pan, into the fire “刚出油锅，又入火坑” 可以用来表达某事从不好的情况进入到更糟的状态。

例句

Studying for my MA was really difficult and stressful, but then I really jumped out of the frying pan into the fire when I graduated and realised there were no good jobs available.