He’s wearing an ill-fitting electric-blue suit that has definitely seen better decades, and a tie covered in little cartoon reindeer. His box of moody watches is on the table in front of him, next to a half-drunk pint. He’s spinning a beer mat on its side and grinning broadly at me through his rust-coloured tangle of facial hair.

‘Sorry … what was that, mate?’ I say.

He takes a sip of his beer. ‘It just felt like you were right on the brink of opening up to your friend there. And then he walked off. Rotten luck.’

‘Right, yeah. I mean, it was sort of a private conversation, but …’

The watch-seller shrugs. ‘Oh, I wasn’t listening or anything. Just couldn’t help overhearing, that’s all.’

He smiles at me again, blue eyes twinkling under his unruly coppery-grey hair. There’s something familiar about him that I can’t quite put my finger on. It’s possibly the vaguely Bill Nighy vibe he gives off – all wiry and crumpled and mischievous. His age is impossible to place, though: he could be anywhere from fifty to about seventy-five.

Still, I’ve been cornered by enough pub bores in my life to know exactly how this conversation will pan out if I keep engaging. After a couple more pleasantries, this bloke will undoubtedly whip his chair round to our table and spend the rest of the night regaling us with long-winded anecdotes, while occasionally attempting to flog us a watch.

‘OK. Well, fair enough,’ I say. ‘Have a good night, then.’

I start to turn back round, but the guy speaks again.

‘Christmas is a time for reflection, isn’t it? Getting things off your chest.’

I sigh. I’m not in the mood for a heart-to-heart with a total stranger – particularly not when I’ve just failed to initiate one with my best mate. But I also feel bad about leaving an obviously lonely old man hanging on Christmas Eve. So I turn back to face him.

‘How d’you mean?’

The watch-seller is now wearing a thoughtful smile and drumming his fingers on the box in front of him. ‘You start to wonder about the bad decisions you’ve made in life, don’t you?’ he says. ‘Or the wrong turnings you might have taken.’ He stops drumming and looks me straight in the eye. ‘You start to wonder how things might have worked out differently for you. And whether – if you could go back and change things – you really would.’

I nod, now feeling slightly concerned that this bloke is some sort of mind-reader. I’m certain I’ve never seen him before, but for a split second I’m convinced that he knows me. That somehow he has access to my deepest thoughts and fears and secrets …

But then reality comes crashing back, and I remember that mind-reading watch salesmen don’t exist.