We were at a swingers club a couple of years ago and had just finished a first session with another couple in a private room. I went to get us drinks and as I walked back towards my wife who was walking around naked in the club I heard one guy say to another guy she is the hottest one in here - I'm going to fuck her tonight. When I got back to my wife with the drinks I was really ready to go again as I had stiffened up and had goosebumps all over. Fucking loved hearing him talk about her like that not knowing I was right next to him.