There was once a lazy man. His father was angry that he did not help in the fields and gave him a task to accomplish. He asked his son to bring him something to eat, something to drink, something to feed the pig and something that would grow a crop, all contained in one item. What did the son bring his father?
A watermelon. The flesh to eat, the juice to drink, the rind to feed the pig and the seeds to grow a crop.
What is as big as an elephant but weighs nothing?