Slavery: A series of erotic games (book 04)
"It happens. I like the whip for that reason. As much as it might sting, I can climax from it. I'll rarely cum from a spanking."
"You were whipping my cunt?" Still doubting her own orgasms.
"You're already aroused, blood flushing your cunt. The whip causes more blood to flow to those areas, reacting to the pain. More blood, more arousal, like pinching your nipples might make you more excited. It might not happen all the time," I said, releasing her, "but it's possible. Master likes our whippings to be as much about teasing arousal as punishment."
"It's time to put on the Slave Trainer," Bill said.