I'm putting this here because I am getting tired of people asking me what it is. :) But if you wish to know, read on.
The term pansexual generally is used for a person who does not classify their sexuality with a person's sex, but their gender. They believe that there is a set difference between sex and gender - gender being the socially constructed condition of being male or female, and sex being the biological condition of male or female. People who are pansexual may be attracted to various different forms of romance, and may be aroused by various different acts of sex on a carnal level. Some suggest that pansexuality is more accurately described by its adepts: human- or person-oriented. Despite a person who is pansexual's fluid sexuality, some may have a preference. Like scene girls and guys, prepish girls and guys, ect.