I have never pimped out my wife per se, but I have invited random black guys to come to our house and fuck her in our bed while I watched.
Several years ago we were active on a site called Dark Cavern. The theme of Dark Cavern was black guys fucking white girls. They had a 'Personals' section organized by City and State. Kate would ask me to go on Dark Cavern and find a black guy to fuck her. I would see who was online locally and chat with them. I would show them pics of Kate and ask if they would like to come to our house and fuck her.
The hot thing, for me, was that my pretty blonde wife was willing to fuck any black guy I invited to fuck her. I would greet the guy at the door and ******* him to our bedroom where I would introduce him to my naked wife. Kate would suck and fuck the guy, having never laid eyes on him before, or even seeing a pic of the guy. Kate would fuck any black guy I brought into the bedroom.
I found that inviting black guys, total strangers, to fuck my wife while I watched was a big turn-on for me. A lot of local black guys from Dark Cavern got to spend an evening fucking my wife. A few became boyfriends that she dated on a regular basis.
Rob