One sunny day, a priest and a rabbi are walking in the park. They pass a lake, and the priest says “It’s nice and sunny, why not go for a swim? We’re both men of God, so we shouldn’t be ashamed of our nudity.”
The rabbi agrees, so they strip and dive in. After a while, they decide to get out again, but just as they stroll across the grass to their clothes, a group of school children passes by, including several ones from both the priest’s and the rabbi’s congregation. Quickly, the priest covers his genitals with his hands. The rabbi, however, covers his face.
Out of the corner of his mouth, the priest mumbles “Why are you covering your face, brother?”
The rabbi replies “Because the children in my community recognise my face, not my penis.”