parity

For reasons I cannot understand, the sidewalk going through my front yard is ten feet wide. Combine that with severe winters and laziness, and you purchase a snow-blower. It made quick work of my sidewalk, so I did my neighbor's, too. He did, after all, blow all of my leaves to the curb in the fall.

"I have a driveway too, you know!" he yelled out his front door.