Butt Slut

I tightened the restraints around her wrists, and ankles. She's was lying on our bed on her belly. Completely vulnerable to me. I got on top of her and rubbed massage oil all over her back, and rubbed her skin and muscles. She relaxed. I gave her big round ass a light slap. She Jerked and let out a pleasurable sound. My fingers wet with oil began rubbing her bum. I wedged my hand between her cheeks and slid up and down rubbing her pussy and asshole, her moans told me to keep going. I started pressing my finger against the opening of her ass. Pushing in a little more each time, before long I was figuring her asshole, it was tight and warm. I told her to squeeze my finger, her anus tightened around my finger and she let out a soft moan. I increased speed, she made sounds I've never heard before, deep guttural moans. "Do you like it baby, do you like my fingers inside your asshole?" I asked. "Yes!" She managed to say practically crying, "yes I do!"
"Are you my little butt slut?" I asked.
"Yes! I'm your little butt slut!" She cooed. I pulled my fingers out of her, put my face to her anus and started to kiss and dance my tongue around around her asshole, then I pushed it in her butt. She let out another howl I've never heard. In and out, my tongue was fucking her asshole, her moans were so intense, it sounded like she was crying. I stopped and just rubbed her round ass, she caught her breath. I said "Now I need you to be a good girl, ok?"
"Yes, I'll be a good girl." she whispered
I picked up the butt plug I had been waiting to use on her. I put lube on it, and I slid it into her ass, she let out a long moan as i slowly stretched her ass open. I told her to she had to hold this in while I fuck her. She replied with an obedient "yes sir!" I slid my hard cock into her soaking wet pussy. "Do you like being filled up, baby?"
"Yes, fill me up, fill me up! She kept saying it over and over, her body was limp. I thrusted harder and harder until I was filling her pussy up with my cum.