When it rains, it pours.
When it rains, it pours.
This idiom means that when problems arise, they tend to come all at once, much like how a heavy rain can bring an overwhelming amount of water suddenly. Its use highlights situations where multiple challenges occur at the same time, often unexpectedly.
When it rains, it pours - another unexpected expense!
When misfortunes happen, they come all at once.
Just our luck, when it rains, it pours.
Just our luck, everything bad is happening at the same time.
She lost her job, and then her car broke down; truly, when it rains, it pours.
She lost her job and then her car broke down, showing that troubles often come all at once.