I was told this by a chap who had been a CPO in the British Navy. Hilarious, but is it true?
Some years ago, before 9/11 I suspect. A British Navy warship paid a courtecy to Boston Mass. 'The Troubles' were still active and the crew were told to 'keep their heads down' when they were out and about, because of the local Irish Nationalist sympathy. A group of them were drinking in a bar and got talking to a chap who claimed to be the local Noraid organiser. They got him blind drunk and took him to a tattoo parlour. I doubt they saw him again, because next morning he must have woken up to find 'God save the Queen' and the Union Flag on his chest.
I wondered if it was true, but an ex-Army officer told me recently that they had done something similar to a German chap who had been berating them about their military victories again Brits.