Your sister collapsed and fainted with the shock. You drag her legs over and reconnect them to her body, thankfully, they reconnect without any problem and it looks almost like nothing has changed. This gives you an interesting idea. You pulled her head into the stocks and let the blade drop. Her head fell off and you caught it just before it hit the ground.
Still unconscious, you put her head on the work bench in the garage. You then put her body beside the stocks and put your own head in the stocks. Pulling on the cord, the blade came down again and you caught your own head with your hands. It felt so werid, being able to move your body, yet not being attached it.
Bringing your head around, you put your head on your sisters body, and it connected instantly. You suddenly lost full control of your body and gained control of your sisters body.
You stood up and admired your sisters body. Her nice bust and hourglass figure. Walking over to the mirror, you also noticed that your walk had, oddly, changed to accomodate for being a girl. Looking into the mirror, it seemed odd to have a male's head fixed on a girls body. You sighed, and another though came to mind.
You walked over to your sisters head, resting on the workbench. She was still unconscious and that was a big positive for you, especially with what you were going to try.
Taking her head, you put just the top of it into the guillotine. The blade fell yet again and the top of her head fell off. You ignored it, looking at her now flattopped head. Amazingly, it hadn't covered it over with skin. You put your hand on her brain. It felt really werid and squishy, but, acting quickly, you took it out and put it on the workbench.
Putting your own head a little way into the stocks, you cut off the top of your head and took out your own brain. Now this was just getting silly. You had taken your own brain out, but could still act like a normal person. You then detached your head from your sisters body, and put your sisters head back on her body. Taking your brain, you squished it into your sisters body and you suddenly had a blackout.
Your eyes suddenly opened and you stood up. Looking around and at yourself you suddenly realised that you had swapped bodies with your sister. It felt great, yet different. Your entire body seemed to move and act differently, yet it seemed normal.
You took the top of your sisters head and put it on your sisters body (Which, now, for sanitys sake, is yours). Long brown hair now covered the sides of your face.
"Oh my gosh..." You said, then gasped. You now actually sounded like your sister as well!
This made you think. You could be anyone, anyone you wanted.
Firstly though, you reattached your body back to its original form, and put your sisters head in a large jar which you hid in your room (Originally your sisters room). Heaving your old body up to your room, you positioned it so it looked like you were sleeping.
Who do you want to be though?