Inadvertently witnessed spankings

Years ago I took a friend for lunch to celebrate her birthday. She said she needed to make a call. She disappeared outside of the pub to make the call but when she returned was smelling of smoke. We have an arrangement where that is concerned. I took her back into the deserted pub garden turned her over one knee and quickly tanned the seat of her jeans. It was all over in a flash but as she got up she noticed a rather surprised looking elderly hikers enjoying a drink and getting a free show. We both thought it amusing after but hoped they wouldn’t come into the pub. Had anything similar happened to others?