Submitted by Darcy
Twice a week a Belgian riding a bicycle crossed the German border and he always carried a suitcase filled with sand.
Each time the customs officials searched his suitcase for contraband, but always in vain.
Sometimes they even emptied all the sand out, expecting to find some illegal item.
They racked their brains but never found anything untoward.
It was many years later, long after the Belgian had vanished from the scene, that they learned the truth.
He had been smuggling bicycles.