An old joke sees a Jewish man accosted by some burly types on one of Glasgow’s rougher streets. “You a Catholic or a Protestant?” demands Thug A.

The man, panic in his voice, insists: “I’m a Jew!”

Thug A takes a step back. There is a pause but the tension remains, until Thug B pipes up: “Aye, but are you a Catholic Jew or a Protestant Jew?”

Today, a similar gag might involve a Catholic grilled on Twitter by cybernats, the self-appointed patriotism police of social media.

Cybernat 1: “What do you believe in, independence or the Union?”

Man: “Catholicism.”

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