As retold by Bruce Lowitt

Father Brown and Rabbi Goldstein, good friends, owned a lot where they built a small synagogue in one corner and a small church in the other.

They also bought a small car together to share between them. As they admired it, Father Brown ran into his church, came out with a vial of Holy Water, and blessed their car.

Rabbi Goldstein mistook this for a Baptism and, not to be outdone, rushed into his synagogue, came back with a hacksaw. And he cut off the end of the tailpipe.