It never rains, but it pours

When it rains it pours. That about sums it up.

When it rains it pours, and its pouring here right now.

It's kind of like when it rains, it pours. I guess it was just one of those nights. Everything seemed to go their way.

People who live in glass houses shouldn't throw stones

No matter how bad a child is, he is still good for a tax deduction.