It started with her just washing me...
I was raised by a single mom. When I was younger I would have to spend two days every week at my grandma's while my other worked. My grandmother also lived alone. Every night when I was there, grandma would give me a bath. She would take out a special sponge and wash every part of me. When I was older, I began to think it was odd--her bathing me, since my mom didn't even do this. But I really liked it, so I never said anything. By the time I was a teenager, I was getting boners every time grandma bathed me. Grandma would ooo an ahhh and say, "well look at that!" while I stood in the bath as she thoroughly sponged my testicles and erection. I loved it.
Eventually, when I was eighteen I would strip completely naked in front of her and she would run the water while she inspected my body. She would place her hands on me, as she inspected me and my penis would harden. She touched every part of my body and then would finally cup and massage my testicles. She would marvel at my pubic hair and run her bony fingers through it. Then she would grip my erect penis and move it around and I would close my eyes and moan while she fondled me. I loved it.
It was our secret. Once I went to grandmothers house and she gave me some lemonade. I told her that I would very much like her to keep giving me baths. She said she would be delighted. I also said it would be fine with me if she wanted to ejaculate me. My grandmother said she wanted to ejaculate me very much. I stood up from the table and took off all of my clothing. My penis went firm and erect. I went over to where my grandmother was sitting and offered my genitals to her. She took my penis and testicles in her hands and began to methodically manipulate them. She took me by the dick and lead me to the bath. She washed me, then as I stood before her dripping she stroked my penis to completion. I ejaculated massively onto my grandmothers hands.
I still go there and have her do this to me every week. I know to others this must seem strange, but we love it. There is love in it. My grandmother knows my penis better than anyone else and it is almost her right in some ways to ejaculate me.