Late one New Year's eve, I received an unexpected message from Brian, the male half of a fairly local couple, saying they could accommodate, now. I replied that it was short notice, but I was interested, so I asked what they were thinking of. The reply came back that I was to come over and take the wife (Jill) to bed with him! I asked whether she was ready and willing, and he said she was. Brian told me that Jill would on...