It was a fatal move. The man beside me in the pub stirred and said:
"I was in Rome briefly 10 years ago. I had an unfortunate encounter with a party of nuns, one of whom still writes to me regularly with marriage proposals."
Everyone turned away from me, towards him.
"Has anyone here been to St Peter's Square?" said the man.
"I was there only last week," I said, but no one paid me any heed.
"It's a huge concourse," he said, "a great open space like an airport terminal, because wherever you look there are different groups moving about, criss-crossing each other like trains in the dark, but they are not looking for their plane departure; they are looking for their coach, or their next cup of tea, or their guide, or the lavatory, or maybe simply the way out.
"Anyway, I was all by myself and I had taken my umbrella along because it looked like rain, and at one point I was walking along trying to get it unfurled, holding it up and shaking it, and I suddenly realised that I was being followed by 16 nuns. I stopped. They stopped. I started. They followed me. Have you ever had the feeling you're being followed? I know that feeling. It's an especially strong feeling when there are 16 nuns after you."
"Why were you being followed by them?" asked someone.
"That's obvious," I said. "If you have been to St Peter's, as I was last week, you will notice that all the group leaders have some sort of rallying object held up in the air. Actually, a funny thing happened to me ..."
"Often it is a walking stick," said the man, "or a red umbrella. Anything to let the group spot the tour guide from a long way off, if they have strayed away. Obviously the nuns mistook my waving umbrella for the group beacon."
"How did you get rid of them?" asked somebody.
"I didn't," said the man. "I pointed out to them that I was not their group leader and they told me - they were all American nuns, so we understood each other passably well - that they were well aware of that and that they had followed me on purpose because I looked more interesting than their own leader, who was a bully and a bore, and they now wanted to stick with me.
"There I was in St Peter's, with 16 nuns looking to me for a good time. So I said: 'Follow me, ladies,' and into the great church we went. If I know one thing about large Catholic churches, or museums, or anywhere, it is that the most interesting parts of the building always have signs like "Keep Out" or "Staff Only" barring your way. So I made straight for a door marked "Private" and went through it. Some papal official, a Swiss guard or something, made an attempt to stop me, but when you see someone followed by 16 nuns, you hesitate, because you think they must have clearance, and while he was hesitating we were through like a flash.
"I don't know if you have ever been behind the scenes at St Peter's," said the man, looking challengingly at me. I said nothing. He had outsmarted me here and he knew it. "But it's a cross between a well-appointed golf club and one of those London livery companies. Lots of changing rooms and wardrobes, and lots of relics in glass cases - bones and skulls, mostly. I think they keep the relics there as going away presents for important Catholic visitors. The nuns were certainly very impressed, so I told them to take one each as a souvenir, and they needed no second invitation.
"Meanwhile, I had been looking round for some clue as to where to go next - we were all alone in these back quarters and there was no one to ask - and while they were sorting out their souvenirs, I chose at random a door at the far end of the hall. I opened it and ushered them all through, and then followed them out - and found myself with 16 nuns on the Pope's balcony overlooking the Square of St Peter! And the crowd all staring up at us and waving!"
There was a dramatic pause. It was broken by the ringing of the man's mobile phone. He took it out. He answered it. He looked concerned. He said he would come at once. He put it away.
"Sorry, gents," he said. "Must dash. Finish the story some other time."
So saying, he left. Personally, I think he had made the whole thing up, just to ruin my story. Some people are like that. Can't bear competition. Anyway, as I was saying, I was in Rome a week or two back and ... damn! Run out of space. Some other time, I hope.