This is a +18 story!!
This a sexual fantasy that I be dreaming for a while now. Just for the content, we got married recently, and after the wedding everything changed unexpected.(There is a part one see the other post.)

Earlier today, when my wife came from work, she brought with her a chastity cage—something unexpected to me. Then she forced me to put it on. I tried to resist, but she slapped me on the face with a few light punches in the stomach. Finally, I did cave in, and I did put it on. The evening came, and she yelled at me, “Come here, slut!!”. I started curiously walking to the bedroom, and she said, “Listen carefully. Today I have a night out with my friends, so I want you to help me get ready!!”. I nodded affirmatively as I said, “Yes.”

I helped her with the shower, and once we finished with the shower, I helped her get dressed, staring with pants, a bra, a red dress, and a pair of black high heels. Finally, she applied makeup and walked to the front door. “Be a good slave and wait for me behind the door, honey, like a good slut you are!”

Many hours later, as I was lying on the floor, I heard the door unlock. I got up on my knees and waited. When the door opened, I saw my wife with two women who were talking loudly and laughing.

“Thats my little slut!!! Awww!”…“I told you girls, he does as I say,” my wife said as she slapped me in the face.
“These two are my friends, and they’re going to sleep with us tonight.”
They walked inside, heading into the living room, throwing their stuff on the floor.
“We made mess!” said the blond women
“That’s ok, I got it! Pick the stuff up slut, and bring us wine to drink!”
I picked up the mess, and I grabbed a bottle of wine along with three glasses. I went to the living room and started pouring wine into the glasses.

After 2-3 glasses, the other woman with the black hair said "Your slave has a beautiful ass!
Wife "He really has! Do you want to give him a ride?
Black "Sure, why not?
"It’s all yours!
I tried to say, “Please no, nooo, noo” as she was dragging me from my hair, but from their loud laughs, they didn’t hear me. Then I screamed, “Please, nooooo.”.
Black said, “No one I asked you slut!!” and slapped me in the face two times, dragging me again to the bedroom.

My wife came in, gave her the strap, and sat in the chairs with the blonde woman.
I tried to resist, but she was muscular; she had enough power to hold me down. She bent me over and started fucking my ass, slapping it from time to time. The beginning was slow, but as time passed, she was going faster, and the pain in my ass was getting stronger until I cried.
My wife walked to me smoking and laughing and said, “She is really good, isn’t she, honey? You better thank her for fucking you!”
“Yes, honey, thanks, Miss, for fucking my me.” They laughed at me as the woman with the black hair kept fucking me even harder now, in and out, for the last 10 minutes.
Black “That’s a good slut! I did enjoy it; we should do it again.”
They picked their beds, and since there was no bed for me, I slept on the floor.