英语笑话:时间对猪有什么意义？

One day a visitor from the city came to a small rural area to drive around the country roads, see how the farms looked, and perhaps to see how farmers earned their living. The city man saw a farmer in his yard, holding a pig up in his hands, and lifting it so that the pig could eat apples from an apple tree. The city man said to the farmer, I see that your pig likes apples, but isnt that quite a waste of time? The farmer replied, Whats time to a pig?