clittylicker's blog post - Tax Audit

At the end of the tax year the Tax Office sent an inspector to audit the
books of a synagogue.
While he was checking the books he turned to the Rabbi and said, "I notice
you buy a lot of candles. What do you do with the candle drippings?"
"Good question," noted the Rabbi. "We save them up and send them back to
the candle makers and every now and then they send us a free box of
candles."
"Oh," replied the auditor, somewhat disappointed that his unusual question
had a practical answer.
But on he went, in his obnoxious way.
"What about all these matzo (bread) purchases? What do you do with the
crumbs?"
"Ah, yes," replied the Rabbi, realising that the inspector was trying to
trap him with an unanswerable question. "We collect them and send back to
the manufacturers and every now and then they send a free box of matzo
balls."
"I see," replied the auditor, thinking hard about how he could fluster the
Rabbi
"Well, Rabbi," he went on, "what do you do with all the leftover foreskins
from the circumcisions you perform?"
"Here, too, we do not waste," answered the Rabbi. What we do is save up
all the foreskins and send them to the Tax Office and about once a year
they send us a complete dick."