"Well, my boy, your body has not gone to waste. Attached to your body is the head of the body you now have. It was so fortunate that you both wanted the other's body."
"What?" I said, not following.
"Well, you see, under hypnosis you expressed the desire to know what it was like to be a college girl and she to be a teenage boy. And fortunately you were compatible so I was able to swap your heads. Normally there's waste or I have to add or remove parts and often I have to wsit until I have several cross compatible subjects to mix and match with, but with you two it was a straight swap. So how's it to be Jennifer?"