My Sponge Bath

I recently had a major knee surgery. For a couple of days after the surgery I had to lay flat on my back and not move the leg. One of my wifes good friends is a nurse at the hospital where I was laid up. To my surprise she walked in one morning, pulled the curtain around my bed and announced she was giving me a sponge bath. I was so embarrassed! She slipped my arms out of the hospital gown and folded it down to my waist. She cleaned my upper half then put the gown back on. She folded the bottom of the gown up and did my legs being very careful around my knee. Then the time came. She pushed the gown up to my chest to reveal my cock.
Now an important piece of information. I have a very large cock. Almost 10 inches when hard. Unfortunately i was far from hard and mortified that I knew this person. As she gently worked around my cock I couldn't help but get a little excited. Eventually she grabbed my cock, lifted it, and began cleaning my balls. Actually it felt more like a massage. My cock was getting harder by the second! She leaned over and whispered something in my ear so my roommate couldn't hear. She said my wife was a lucky girl. As I looked down at the grip she had on my cock I knew I was in trouble. She took the warm sponge and began moving it up and down my cock. Her free hand began moving up and down with the sponge as she looked me in the face and smiled. I began shooting cum all over her hands. She cleaned me up and folded the gown back in place.
Lets just say I didn't tell my wife.