[randolph]

Possibly, part of it is projection of desire. We know how good out cock feels especially when it is hard and we would love to suck it. We like the female body and when we see a nice hard cock attached to it, we relate it to our own cock pleasure. Many of us desire to suck our own cock but this is very difficult or impossible. We are not gay so we don't want to suck a guys cock. Sucking a tranny cock provides a way to satisfy this innate urge to suck our own nice big hard cock.