This is a self-bondage fantasy I've had more than once. My wife is the youngest of 4, 2 of her siblings being sisters and not bad looking either. Linda the oldest, Christine the second-oldest.
My wife of just a few years is gone out shopping. Her sisters are in the bedroom with their brother-in-law slave, me. They were matching corsolettes, Mistress Christine's is deep blue and Mistress Linda's is an ice green, that push up their breasts very nicely. Their high-cut panties and stockings attached by garters match their corsolettes, 6" pumps round out their outfits. So do the riding crops they carry, their badges of office.
Mistress Christine ties a thick cleave gag into my mouth. "I don't want our boy protesting anything," she says. The two Domme sisters of my wife never stop smiling, they love the power they hold over me. I'm their slaveboy and they know it.
"Okay, boy," Mistress Linda barked, "Strip! Down to your shorts, move it!"
I mew into my gag, forced to obey. As I pull my shirt off over my head I notice them unzipping a small gym back and removing rope from it. I whimper into my gag.
"Awww, isn't that cute!" says Mistress Linda.
I'm turning pink with embarrassment. I sit on the footboard long enough to untie my tennis shoes and I pull them off. My socks next, standing to slowly unbuckle my belt, my eyes on their hot bodies, the ropes in their hands, and their very clear smiles at my turning from pink to red as I slide my jeans to the floor and step out of them, wearing only my dark blue bikini underpants that my wife Patty gave me.
Mistress Christine opens her hand and ruffles my hair. "Isn't he just precious!" she says to us both. "No wonder Patty loves you so much!"
"Okay," Mistress Linda chimes in. "You know the drill, on the bed, hands behind your back. NOW!"
"Yfffph Mfftrph!" That's all I can manage to say. Laying on my side Mistress Christine takes a good length of rope and ties my hands behind my back while Mistress Linda crosses and secures my ankles. I turn my head to try to see my hands being tied, and look down watching my ankle ropes being cinched and knotted. These two obviously know how to deal with a man.
"Okay Chris," says Mistress Linda. "Show us what a good job we did on you."
"Mmmrrrffmph....nnfmfmmrrph mmmrrrrrrfffph..." I roll on the mattress in front of them, humiliation setting in as they laugh quietly to each other, tapping me here and there with the ends of their riding crops, not wanting me to stop.......
By this time I've usually climaxed. Though this fantasy CAN obviously continue.......!