I have had this fantasy since as long as I can remember. I would love to someday have the opportunity to live it out.
Due some sort of accident or traumatic event, I awaken from a deep sleep with my legs and arms in a plaster cast and my neck braced, and my jaw wired shut, essentially some type of full body cast. My legs are in traction. I am completely unable to move and unable to speak. I am using a ventilator There are several IVs in me, and I am being fed through a tube. Additionally I am hooked up to a heart monitor.
I am able to see that there is a hole in my cast just big enough for my penis and testicles to hang out. I can feel a rather tube inside my penis, a catheter, with my urine constantly collecting in a bag beside my bed. I can also feel cool air on my backside, and realize there must be a hole for my ass.
Realizing that I am now awake, I nurse comes in to check on me. As my mouth is wired shut, the nurse takes my temperature anally. He then tells me it is time for my enema and sponge bath at which point I realize that I have completely lost of my body. This is scary but slightly arousing. After my enema, he bathes me with a sponge, which is extremely embarrassing, especially as he washes my penis. He then leaves me back to loneliness, where I think about the situation I am in. I notice he forgot to cover me back up, so I lay there exposed for the next person to walk in the room.
All night I am woken up to check my temperature hourly, and my catheter is changed daily. I am unable to do anything for myself and am completely helpless. The total loss of control is amazing.
Anyway, this is my fantasy and hopefully someday I can be able to live this experience or be able to simulate it.