It was a unique situation, but years ago I had this Michigan housewife who was my owned slave, she obeyed me via chat, email, and phone.
Things progressed to encouraging her to flirt more with men when her hubby wasn't around, and eventually that led to her flirting with a black friend of theirs. One day he made a move on her, and thanks to my training she was already super horny all the time. It didn't take much for her to give in, and at 48 she had her first new cock ever besides her hubby, and her first black cock. SHe said he was absolutely huge.