Not a recent encounter (2015, if my memory serves me correctly), but it was when the wife and I were on holiday in Jersey. We were wandering round the indoor market in St. Helier, when this bloke came around a corner, wheeling a trolley, as he was delivering stuff to one of the stalls. He was moving quire fast, so I stepped sideways, but he stopped and stepped in front of me. I went to step to the side again, but held out his hand.
"I've got to shake your hand, mate", he said, "I'm a Brentford fan" (I was wearing an old away shirt and he'd clocked the badge).