Bring my wife to a motel room where a group of strangers are waiting for her. Handing her over to them and saying that I present them with a sex slave. Then sitting in the corner watching what they use my sexslave wife for.
Many times on our condo ground floor patio. But the most public place was in the condo court yard with about a dozen units facing it. And it wasn't quick. lasted 2 bottles of wine.