"The eternal porpoises lived in a landlocked" joke
The eternal porpoises lived in a landlocked lake along the Ivory Coast of Africa. At one time the lake had been connected to the Gulf of Guinea; now the only way they could feed on the baby sea gulls that enabled them to live forever was if the natives of the Ngubi tribe captured them in the gulf and brought them to the lake.
The natives performed this sacred duty for centuries but lately lions had taken to hunting the valley that led from the Ngubi lands to the shore. Thus it became necessary for the natives to spend a great deal of time distilling and manufacturing a sleeping potion which, with tremendous care, the bravest of the Ngubi warriors dispensed via poison dart before making their way through the valley.
Unfortunately, this process put an enormous drain on the treasury of the tribe. Not only was the poison costly to make, but the time the warriors spent putting the lions to sleep should have been used for hunting. Thus, the chief was forced to put a new law on the Ngubi books: He made it illegal to transport young gulls across sedate lions for immortal porpoises.
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