I'm your Man - er, Woman.

"Alright," I said. "I'll do it!"
Lancelot broke into a wide grin and clapped me on the shoulder. "Splendid! Let's get started right away. First off, we have to give you a new body..."
With that I was ushered into a large room where a group of cowled individuals surrounded what appeared to be a rune insrcribed circle on the floor of the Temple. They seemd to be in some sort of trance.
"What's all this?" I asked curiously as I took my place in the center of the circle.
"Well, our profile of the Joyriders, based on the Avatars they choose to attack, is that they are young caucasian males from the ages of 16 - 25. While we have a general idea of the kind of woman they go for, we want to make sure you make for nigh-irresistible bait - and that's why these young men are here. To provide us with a template which will mold your new avatar."
"And they're going to do that by sleeping?" I asked, a bit snappishly I fear, since I was still uneasy about the whole affair, good and noble cause or no.
"By dreaming actually," Lancelot replied, and then, rather abashedly he added, "A very specific kind of dream..."
I blinked. He couldn't mean -
Lancelot continued, "Don't worry I'll be guiding the process so I won't let it get too out of hand..." The Knight nodded to his aides, "You'd best brace yourself though... This might get a bit uncomfortable..."
"Wait a minute..." I protested, "You mean all these boys are in some sort of induced... Wet dream? And... And I'm going to be..."
Lancelot finished my sentence for me.
"You will be... The embodiment of every young male's innermost fantasy..."
No wait... there had to be another way -
but before I could finish the thought the spell hit me. And the changes began...