I'm losing my marbles!

I was sitting on the couch one day when I spotted a marble on the floor. It got me to thinking about how it would feel to be stuffed with them. So I offered my sissy a rare opportunity to play with me. She gets dressed up and starts sliding them in until I feel full, and then fingers and plays with me to two of the most intense orgasms I've ever had! It was so mind blowing!