A few weeks ago, my wife went out for the evening with her (black) lover. He had asked her to wear a revealing dress, no bra or panties, because he wanted to show her off to his friends. She did as he asked, obviously. When they left the club and were in a quiet side street he told her to flash her tits to his friends. As she pulled the plunge neck dress open to show her gorgeous tits, he lifted the hem of her dress right up so that his three friends got to see the whole package.
Thankfully, she was in the right mood having been dancing with them all evening and found it amusing. I'm sure the three guys went home very happy too. But apparently it had a very major effect on her lover who ravished her like never before when they got back to his flat.