Watching Her and Helping Her
She lies face down and I kneel between her naked thighs. Her hips are in motion even with her pussy merely pressed to the mattress. This she did as a young girl and she tells me often how her older sister used to tell her to keep still. She managed to keep going by just twitching buttocks until this nice feeling came. She might crumple up the sheet under her pussy or use a rolled up handkerchief between her labia to help the feeling come and increase. She had no idea of what she was actually doing.
I might just watch her, a mature woman, masturbate in this position or quite often I would put my hand between the top of her thighs so my fingers were in contact with her clitoris. It was then so pleasurable just to see and feel the clenching buttocks. With this frequent and habitual experience she is able to control the way her clitoris is stimulated. I can feel it with my still firm fingers. It feels hard and stiff as it plays with my fingers, jumping over and sliding along them.
She takes her time, changing speed and pressure at will for maximum power and duration. Often she wants me to penetrate her asshole with my thumb or a toy. My other hand might be squeezing her buttocks, something she adores, or masturbating myself.
One thing I never cease to enjoy is to feel the muscle contractions in and around her asshole before and during orgasm. I don't need telling when this is going to happen. Her buttocks are now thrusting and her clitoris is even harder. She is not going to stop. She cannot stop. I slide a finger deep into her pulsing asshole and keep my other hand still as she humps it to a breathless, leg-stiffening and shaking climax. The contractions bring us both joy. It is a wonderful gift. Of course I will ejaculate by hand or between buttocks. Sometimes she guides my cock to penetrate.
She has multiple orgasms that can go on for an hour or more and are hard to stop. They just increase in duration and intensity. They may wake her later and need relieving but that is another story!