I love this expression. It applies to so many situations.
When I had water in my basement, I called my plumber and he said it was my hotwater heater, which of course is a plumber’s job.
I called my concrete man and he said it was my foundation concrete.
I called my furnace man and he said it was my furnace.
So I got a new hotwater heater. And there was still water in my basement.
I called my furnace man and he showed me where the overflow water was leaking out.
That solved the problem.
I’m glad I didn’t get the concrete man in to pour a new foundation.