Who was the first person (adult) that you had a crush on when you were younger? Who turned you on for the first time (non-celebrity)? I have two... one for each sex:
The first guy was an older boy in High School, who looked kind of like superman. The first girl I had a crush on was my 11th grade history teacher, who looked somewhat like Charlize Theron does now. Both fueled my fantasies for a while.
Who was your first crush?