Carbon Offset

When I booked my last vacation flight, there was a checkbox for buying carbon offsets.
It was only a few bucks, so I checked it.
The next thing I knew, FedEx was dropping weird black bricks off at my door.
“Here’s your carbon!” the deliveryman said. And he made me sign for them.
At first, I didn’t know what to do. I put them in the closet, then the garage, and every available place.
Then, I built a deck. And then repaved my sidewalk and driveway.
Maybe I’ll fly around the world and build a new room on the house.