The Internal Revenue Service sent an auditor to a
synagogue. As the auditor reviews all the paperwork,
he turns to the Rabbi and says, “I noticed that you
buy a lot of candles.”
“Yes, we do,” responded the Rabbi.
“Well, Rabbi, what do you do with the candle
drippings?” He asked.
Read the rest below the fold… (warning: language may be offensive to some)

“A good question,” noted the rabbi. “We actually save
them up and when we have enough, we send them back to
the candle maker and every now and then, they send us
a free box of candles.”
“Oh,” replied the auditor somewhat disappointed that
his unusual question actually had a practical answer.
“Rabbi, what about all these matzo purchases? What do
you do with all the crumbs from the matzo?”
“Ah, yes,” replied the rabbi calmly. “We actually collect
up all the crumbs from the matzo and when we have enough,
we send them in a box back to the manufacturer; and every
now and then they send us a box of matzo balls.”
“Oh,” replied the auditor, thinking hard how he could
fluster the rabbi.
“Well, Rabbi,” he continued, “what do you do with all the
foreskins from the circumcisions?”
“Yes, here too, we do not waste.” The rabbi answered.
What we do is save up all the foreskins, and when we have
enough we actually send them to the Internal Revenue Service.”
“Internal Revenue?” questioned the auditor in disbelief.
“Ah, yes,” replied the Rabbi, “Internal Revenue. And about
once a year, they send us a little *prick* like you.”