Comprehensive resource for understanding and mastering English idioms
The idiom "cry me a river" is used to express exaggerated disappointment or disbelief that someone has done something wrong or that a situation has unfolded in an unfavorable manner. It is a figurative way of saying that the person's actions have caused such extreme frustration or upset that they would need to cry all the water out of a river to express their emotions.
The origin of the idiom "cry me a river" is unclear, but it has been in use since at least the 16th century. One theory suggests that it comes from the idea that someone would need to cry all the water out of a river to express their emotions, while another theory says that it originated as a way of expressing the amount of rain one would need to cry for. The usage of the idiom has remained relatively stable over time, but the meaning may have evolved to reflect changes in society or culture.