Some years ago I was in an hotel bar, in the early hours, when two young guys came into the bar and started chatting. They were clearly quite excited and were talking about what they'd done.
They had been to a local brothel and both sampled the delights of a couple of the girls. One of them then said to his mate 'aren't you going to say thank you?' His mate asked what for, and he said that he'd paid the Madam for both of them, so he had treated his mate and thought he should thank him.
His mate then started laughing and said 'oh fuck, I did the same!' A lucky night for some