Once there were two frogs. They lived together in a lake. One very hot summer,the lake dried up and the frogs had to leave the leave the lake to look for a new home. As they went along, they came to a very deep well with a lot of water in it.
"Good!" exclaimed one frog. "We need not go any further! This well is cool and deep, and will be a very comfortable place in which to live. Let us jump in!"
"Wait," said the other frog, and think for a minute. "If this water was to dry up, how would we get out again?" Then the two frogs decided to leave the well to look for another suitable home.