Surprisingly easy. I actually had no idea it was a fetish in the first place when I experienced it the first time. I was pointing out to my girlfriend that I thought certain scenes in movies where the woman was put out cold and suddenly became a limp rag were really hot. She did not seem to look at me like I had six eyes so I asked her if she would play home invasion victim and she smiled "Like really, you want me to do that?" I said "No I would love it." Well OK she said seeming both nervous and excited and asked exactly what I would do and she went along and came of wit her own later on. Some woman I never approached the subject with but I guess trust is the most important issue. Trust she will trust you, trust that you trust her with your fantasies and really what is sex without trust. Many would say any sex is great but I've only left those situations feeling empty. Part of the thrill is knowing this beautiful person you are with trusts you tyo bare everything to me in an unconventional way and knowing that she is comfortable, and usually for the first time, sharing there secret turn ons.