Many difficult things always happens at the same time,either we tend it to happen or not, because there are some situations,bad or good we thought it doesnt happen but it does. Like things that happen by accident or we intend to happen it by ourselves or others at the same time. It is the life that we live in the world and we are living with it.
This famous phrase When it rain ,it pours comes from a common phenomenon on which, after there has been no rain in a long time, a lot rain suddenly falls at once and the weather remains rainy for a while.
But this is widely known idiom like my line of work. There is a day that we had few costumers which is good and in the next day, suddenly lots of guests come and go,by then we are busy trying to entertain and waiting tables for them, which is great, for the business.