At the end of the tax year, a tax inspector turned up at a synagogue to
audit the books. While he was checking the accounts, he turned to the Rabbi
and said, "I see that you buy a lot of candles, but from time to time the
manufacturers send you a free batch. Why is that?" "Good question," said the
Rabbi. "We collect all the candle stubs, and send them back, and in return,
the manufacturers send us a free box."
The tax inspector, still keen to find some irregularity, says to the Rabbi,"
I see that the bakers send you an occasional free box of matzo bread. Why is
that?" "It's the same principle," says the Rabbi, "We save all the fragments
of matzo bread, send them back to the baker, and he sends us the occasional
free box."
"And what other examples do you have of this principle?" asks the tax
inspector. "Well," says the Rabbi, "when we perform circumcisions, we save
all the fragments of foreskin. Once a year we send them to the Tax Office,
which in return sends us a complete dick."