"Ok, there I go" you start. "I want to have a body of a normal, healthy, young human female, except with no head. My brain should be nested in my pelvis, my eyes should reside where my nipples would be and my mouth where my bellybutton."
"Are you sure this is what you want?" Tanya looks at you puzzled. "This is a very dramatic change and you would be considered a freak forever. Not to mention that you'd have to choose to either not see or go topless, which might be a problem if you end up with big breasts."
"Yes, I am sure." you answer.
"Ok" she says. "Please give me a second."
Tanya walks over to a panel and a display in the wall. She presses some buttons, types some things and after a couple of minutes of that something falls down into the dispenser nearby, also sticking out of the wall.
She picks it up and hands it to you.
"This pill will realize your wish." She says. "Once you take it, the nanobots contained in it will transform you into the description you gave me in approximately half an hour."
Your eyes get big as you hear "half an hour". You anxious to see the results you already popped the pill! And your house is at least a quarter hour walk from where you are.