Dear Abby

I am making this up from an actual Dear Abby letter:

Once a week I go to my single daughter's home to mow and trim. My truck is parked in her driveway with the gas can left in the back, and is plainly visible. After mowing, although a small lawn, I am very tired. I go into the house to rest, get a drink and visit. After an hour or so, I come back out and prepare to leave. Lo and behold, the gas can is missing from the back of the truck. What to do?

I did nothing. Well, almost nothing. The following week I return to mow and trim. I have a new gas can, filled up with gas ...and two pounds of sugar. I mow and trim and then go in to rest, get a drink and visit. After that, I leave to go home,...but the gas can is missing again! I go back into my daughter's home to tell her what happened. As I am leaving a second time, I notice that a neighbor's boy and his friend are pushing his car up the street with leg power. He mutters something about "There's something wrong with the engine".

   WHO SINNED?