Dramatically so!

"Please fuck me, Master! Fuck me hard," Candace exclaims, her will broken.
"Where do you want me to fuck you, ****?"
"In my pussy! In my ass! Wherever you want, Master."
"Say 'I'm a dirty slut who wants to get fucked by my Master,'" you order.
"I'm a dirty slut who wants to get fucked by my Master! Just please stop spanking me! It hurts!"

"Very good. You can stop now, ****. I'll let you play with Teacher Slut here," you say, "Enjoy."

You pull out of Mrs. Pendragon's pussy and slap her ass with your dick. You walk over to Tiffany, who reaches down and strokes your dick.

"Can I fuck her ass, Master," she says in a sultry tone.
"Go ahead. Just make sure that she can walk back," you reply, "If she can't, you have to carry her."
"Yes, Master."

She lets go of your cock, giving it one last squeeze, and walks over to Mrs. Pendragon. She's truly submissive now and thus hasn't moved from where you left her.

Tiffany takes the marker that was in Candace's ass and presents it to the woman's face. She submissively sucks it, ingesting the girl's juices.
She holds up the pen as well and the woman sucks the round tip as well. She alternates between the two, showing what a slut she is.

"Do you want this all to end and for me to return you to the Rec Room," you ask.
"Yes, Master," Candace says, "I'll do whatever you want if this all ends."
"Good. In that case, let's see if you can take all of this..."

You push your dick into her asshole in one go! The lubrication on your dick helps, as does Tiffany's earlier stretching of the hole. Candace grunts as you **** your way down her tightest hole.

"Tell me you love it," you order.

Candace stays silent, biting her lip. You respond by smacking her on the ass with both hands. You do this several times in quick succession, giving her no time to recover.

"I love your dick in my ass! I love your dick in my ass! Please stop spanking me! I'm sorry! I'm sorry!!!!"

You reach forward and grab her big breasts as they flop against the edge of the desk. The mix of pain and pleasure confuses her, which is all part of your plan.

You continue to play with her sensitive nipples and fuck her ass at the same time. She moans and grunts at the same time. Whatever will to fight back or say 'no' to you is being fucked out of her.

http://u1a-i2.gspcdn.com/thumbs/64706.jpg

Meanwhile, Tiffany has moved behind Mrs. Pendragon and is fucking her ass with the same marker. At the same time, she is fucking her own pussy with the pen. Both of them are moaning loudly.

"Are you going to cum, ****?"
"Yes, Master. You're going to make me cum soon, Master."

Your hands move down to her pussy. With one hand, you spread her lips. With the other, you find her clit and press down on it.

"Do you belong to me forever," you ask.
"Yes, Master, I belong to you forever. Please make me cum, Master."
"Permission to cum, Master," Mrs. Pendragon says.
"Me too, Master," Tiffany says, her face strained.
"You can all cum right...now," you say, rubbing Candace's clitoris hard.

All three woman orgasm in unison, all slaves belonging to you fully now. The orgasms rip through their body, causing them to exclaim their pleasure very loudly. You're glad that there is nobody around to hear all of this.

The trio come down from their orgasms and all look at you excitedly. You own them. Time to convert more of them. Then again, there are more ladies to catch here.