Interesting fact: femboys are transvestites, or in other words experience transvestism(I swear that's a word even tho it has a red scribble), the definition of which is:
1. the abnormal desire to dress in the clothing of the opposite sex (no not intercourse!).
2. the act or state of being dressed that way.
Edit: by the way, this is taken from a dictionary that was made in 1986. Word for word.