Hi Ubantu1: I just replied to your other post on this subject. So I won't repeat everything I wrote there. My suggestions are first... stop looking this stuff up on the internet! All it's doing is disturbing you to no useful end. And, second, consider seeking the services of a therapist who has experience working with individuals who have these kinds of problems. (It is, I believe, important to find a therapist who has the requisite experience. One who does not can do more harm than good.)
You need someone with whom you can talk all of this through so that it does not continue to rumble around in your thoughts. From my perspective, it is the shame, guilt, & anxiety you're feeling over this that is the real danger here... not the fact that you happen to be turned on by the idea of girls in thongs.