I would usaully assume that by having the transforamtion, "forced" upon someone, it would remove much of the feelings of guilt for wanting it in the frist place,. I recall seeing some "gender bender" stories in the old Usenet Newsgroup, Alt.Sex.Stories.Moderated, over 20 yeaers ago(wow). Most of these didnt do much for me, but there was one, called, DNA Virus. Its stll available in one of the archive sites. Besides being a bit more plausable, one thing that really hooked me was the discription of sex from a womans POV. I'll have what she's having ;)