Tell your Priest friend this one:

A rabbi and a priest get into a terrible car accident. Both cars are
totally demolished, but amazingly neither of the clerics is hurt.
After they crawl out of their cars, the rabbi sees the priest's collar
and says, "So you're a priest. I'm a rabbi. Just look at our cars.
There's nothing left, but we are unhurt. This must be a sign from God.
God must have meant that we should meet and be friends and live
together in peace the rest of our days."

The priest replies, "I agree with you completely. This must be a sign
from God."

The rabbi continued, "And look at this. Here's another miracle. My car
is completely demolished but this bottle of Manishewitz wine didn't
break. Surely God wants us to drink this wine and celebrate our good
fortune." Then he hands the bottle to the priest. The priest agrees,
takes a bit, and hands the bottle back to the rabbi.

The rabbi takes the bottle, immediately puts the cap on, and hands it
back to the priest.

The priest asks, "Aren't you having any?"

The rabbi replies, "No...I think I'll wait for the police"