I remember not too long ago I was playing a card game with my cousin, who was staying with us for a few nights. She was good looking, with very large breasts that would push out of her shirt. I think she liked showing off because he nipples were constantly hard and poking out.
As we were playing cards I got horny thinking about her nipples and became really hard. She turned the conversation to masturbation saying that it was totally normal and that she loved doing it daily. She said it had been a while because she can't masturbate while she is in someone else's home. She said she was afraid of being caught.
But she could see my hardness in my shorts and said it would be cool for her to watch...
We moved to the couch where I eased my cock out of my shorts and began to slowly stroke in from of her. Her eyes were glued to my cockhead.
She said she was amazed by my size and that I had the biggest cock she had ever seen. She laughed and said she now knew who in the family was hung like a horse (I am not that big...I don't think).
Anyway, she unbottoned her shirt and her boobs emerged, hard nipples and all. I reached over and touched them while I stroked to a huge cum. I spurted all over her, the floor....
She said that was cool and wiped up my cum. Later I watched her masturbate in her room and I came again as well. It was a lot of fun, but we haven't done anything like that since.