A doctor fell into a well once...
A doctor fell into a well once. He learned to tend to the sick and leave the well alone.

A couple came upon a wishing well...
A couple came upon a wishing well. The husband leaned over, made a wish and threw in a penny. The wife decided to make a wish, too. But she leaned over too much, fell into the well, and drowned. The husband was stunned for a while but then smiled and said, "It really works!"