I had broken both my wrists in a climbing accident and was ready to be
discharged from the hospital. During my stay I was told not to get my casts
wet, so of course that meant sponge baths from a nurse. It wasnt as
exciting as it sounds. I had the oldest, ugliest nurse on the ward and the
thought of her did nothing for my sex drive. I was glad to finally get
home, and in all the excitement of my homecoming, and my parents leaving
the next day on vacation, the thought of personal hygiene never crossed my
mind. That is until the next day when I realized it was just me and my
sister at home and I needed a bath. Amy and I have always been close so I
just explained it to her, asking if she could give me a hand washing up.
She laughingly replied " why not just join me in the shower?"  We both
laughed for a minute and then I suggested maybe that was the best solution,
I would just keep my back to her so I wouldn't see her naked, and all she
would see is my ass.

I think the thought of seeing a man naked turned her on a little, she blushed
and thought for a second then said " OK, but not a word of this to ANYONE" , I
agreed and we headed for the bathroom.

Amy got the shower water running and left the room, I took off my clothes and
got in the shower with my arms resting on the towel rack to keep the casts from
getting wet, I was facing the back wall with the water hitting my back and ass
"I'm in" I yelled to Amy. I couldn't see her, but I felt the cold room air when
she opened the glass shower door. I handed her the soap and tried to make small
talk to take our minds off the akward situation but Amy told me not to say
anything for the rest of the shower or she would stop. I felt her soapy hands
on my shoulders first, and I must admit I felt a tingle in my dick. Amy started
rubbing my shoulders and then worked her way down my back slowly, I think she
was enjoying this. She was close enough to me that I could feel her legs on the
back of my knees, and every once in awhile her nipples rubbed my back, on
purpose I'm sure.

Then the big suprise! Her hands began to wash and massage my ass cheeks! One
soapy hand went slowly from beneath my balls all the way up my buttcrack! My
cock was now hard as a rock. If I wasn't there I wouldnt believe what happened
next. My sister, Amy, reached around my body and took my cock in her soapy
hands! Her tits pressed into my back, I could feel her pubic hair on my ass,
one hand cupped my balls and fingered them, the other began to stroke my cock
up and down. I went to talk but she reminded me that any speaking and she was
out of there.

Amy was now jacking me off in the shower, rubbing the length of her body along
my back and really enjoying herself, I was having a pretty good time too. Amy
took me by the hand and turned me around.....man was she beautiful!. I'd never
seen my sister naked,(who does), she had breasts that must have been 38's
easily, the pink area around her nipple was large like a silver dollar, and her
nipples were standing erect. Between her legs she was bare, her pussy lips had
been shaved and the only hair was a little tuft right above her clit.

I wanted to touch her but couldn't because of the casts, she knew that and
started to wash herself for me to watch. She put soap all over each tit and let
her fingers run over her nipples again and again, she squeezed her breasts and
let them slip through her soapy hands, one hand went to her pubic area where
she quickly found her clit and began to massage it, while the other hand found
my cock. What a sight! My sister wet and naked with one hand in her pussy, the
other tightly wrapped around my dick doing both herself and me! She stroked me
like that for a few minutes,my cock building up with cum ready to explode, then
she got to her knees. Her lips closed around my wet cock and began to go up and
down on my shaft. Her hands went to my ass crack and one finger found my
butthole. As her finger entered me I pushed deeper into her mouth, she held me
close with the other hand not letting my cock leave her hungry mouth. Amy's
tongue licked me from my balls to the tip of my dick, even finding my pee hole
and exploring it, her finger in my ass slid in and out slowly sending shivers
up my spine. Before long I couldnt take anymore I arched my back and shot a
load of cum into the back of her throat, she swallowed as much as she could but
I was so full some dripped from her smiling lips and onto her tits and nipples,
she rubbed it in and licked my cock clean, then sucked out the last few drops
until I was done pumping cum. She finished the shower with me and we had
another one each day my parents were gone, we also shared a few other days
since then, I'll tell you those stories another time.