There is a well-known Sukuma, Tanzania riddle that goes
like this:

    "I have a riddle." "Let it come."

    "He went to the coast naked and returned fully clothed?"
… (answer) "GROUNTNUT."

    This riddle is based on the following adapted African
story:

    "Masanja was a Sukuma man who lived in Maswa in Shinyanga
Region of Tanzania. After getting married and building a new house Masanja got
many difficulties. His wife ran away, his youngest child died, his house fell
down and thieves stole all of Masanja’s cows. Suddenly he was a beggar. He
thought he had been bewitched.

    Masanja started to despair. But finally he decided to
leave Shinyanga Region, that is the interior of Tanzania, and go to the coast,
to the city of Dar es Salaam. He travelled as a beggar without clothes, without
money, without anything.

    After arriving in Dar es Salaam, Masanja started to get
lucky. First he found work and a house. After a while he opened a store, then a
small hotel. He began to make a lot of money. He built a permanent house, which
he rented. Then Masanja built a soft drink factory. Finally he became very rich
with many possessions. But he didn’t want to live in Dar es Salaam. So he
returned to his home in Maswa in Shinyanga Region with great wealth a car, new
clothes, many goods and a lot of money."