Mistress leads me into the room naked except for my collar attached to her leash. i walk out head down and lay over the bench as Mistress tells me. my butt in the air, she holds my head and kisses me on the lips and tells me that i am doing this for her. she lets me suckle on her breast as i feel a big man behind me. he is pouring lotion on my butt hole and is slowly putting a finger in me there. it is so tight and i feel my butt quivering and Mistress smiles at me and says remember you do this for me, i am to accept this because of my love for her. i feel the man leaning on me as Mistress caresses my hair. i feel his big thing going into my butt. i start to cry but lay there as Mistress has told me. my whole butt is full, he is pushing it so deep in my butt, i rub myself as Mistress told me to make up for the pain i feel. it feels like my butt will rip open and the pain will never end but i rub my clit faster and look in Mistress's eyes . he is so big on top of me, his hair rubbing against my back, his thing so thick in my little butt, i can't help it as he thrusts in my butt and i try to breath, i pee myself. i feel him getting bigger in me and a wet warm sticky sense in my butt, i hear his groaning and feel his grabbing my nipples as i am being filled with his cum. finally, as he pulls out of me and i feel his result dripping down my leg, i look at Mistress and i rub faster and harder until i orgasm looking into her eyes. My butt is so sore and it feels like i need to poop so bad. i lay there in my pee and his cum, feeling the need to poo but Mistress says she loves me for proving i am truly her's and i feel so wonderful as she lets me suckle her breast. She pulls on my leash, i slowly stand my legs weak, my butt so sore, she leads me naked again into the room and motions for to lay on the bed. the men stare at my nakedness and call me slut and whore. I look at Mistress and she smiles at me, i no longer care what i am called. she spreads my legs open and tells me to masturbate for them to see. i start to rub and Mistress runs her fingers through my hair. as i rub myself faster, the men come up to me and as they stroke themselves i feel the ooze being squirted on me. i glance down and see their white cum covering me. Mistress tells me not to stop now so i rub faster and feel my orgasm coming over me. my body shakes as the orgasms run through me. Mistress kisses my lips i feel her warm lips on mine. she smiles and i know i have pleased her through my humiliation, but i am so happy because as i hold her hand i know she loves me and that is worth the world. I lay exhausted feeling my orgasm running through my body. I lay there legs spread as Mistress smiles at me and I hear the buzz of the vibrator. Suddenly, I feel it on me. The vibrator is in me and i begin to get excited again, Mistress kisses my forehead and opens my mouth. I feel the vibrator bringing me ever closer to ecstasy, my body covered in caking white cum. Then I feel a man placing the head of his cock over my open mouth and feel him release in my mouth. I taste the warm white ooze on my tongue as it fills my mouth. I swallow as it is my only option and feel another man as he prepares to fill my mouth as the last one had and i realize there are several more in line. The vibrator brings me to orgasm and as it continues to hum inside me i feel another so close. Now I know I am but a cum slut forced to orgasm for as long as Mistress wishes. Again i feel her hand caress my hair and i gladly lay there for the Mistress I adore.