I started a session just before going to bed. This never works out for me. I drift off to sleep before anything gets started. It worked out this time, though. Fuck me running, did it work out. I felt a slow pulsing at my anus that maintained a persistent stimulation, and a much slower internal stroking that triggered a wave every forty seconds, I estimate, that amplified the stimulation. The two different internal contractions kept their slow, relentless...