Exactly what you think it is. I had a highly active hormone system when I was 13, the girl who sat in front of me, the cheerleader, the girl on the basketball team, even my science teacher... I was a huge pokemon fan, and I wanted it to use transform attack on those girls and then I would tell it to use all those attacks that the girls know on me.
I also had similar fantasy about that blue bitch on x-men.