What's that sound?

So I was in my kitchen one day late last week.
Suddenly I heard a loud roaring sound, like a chainsaw.
A rumbling, revving chainsaw.
Moving back and forth.
Very close to my house.

It sounded like it was inside my house.
But the only people here at home were my daughter and I.
And she and I don't ever use a chainsaw in the house.
Neither she nor I have never used a chainsaw.
We don't own a chainsaw.

I turned my head so I could gauge the direction the sound came from.
Above me from the direction of the neighbor's house to the south.
But it's closer than their house.

I found myself repeating the following questions -
What's that sound?
What could possibly be making that sound?

Just as suddenly, I knew exactly what it is.
It was the sound of our vacuum cleaner.
Being used upstairs - while I was downstairs.

I think it was the first time I've ever heard the vacuum cleaner being used when I wasn't the one using it.

How sad and funny and revealing is that???