Slavery: A series of erotic games (book 04)
"Kneel on the bed with your ass in the air and spread your cheeks, Regina."
She didn't argue, instead doing exactly as I said, though her body language still displayed trepidation.
"You've experienced a good ass cleansing, to get anything out of your rectum which might spoil this experience for you and us. Believe me, no one will enjoy tonight if you suddenly vomit all over the bed. Right now, your ass is probably cleaner than your cunt, and definitely cleaner than your mouth. We used a mild soapy water several times followed by a clear water rinse to remove soapy residue. Now if you had not been cleansed, I would never, ever do this."