Sandy's pussy!

He moves back to the others, eyeing them with evil intent. They all look nervous.

He picks Sandy, taking her over to the Table and placing her on it. He slowly slides her down to the end, her pussy presented right in front of Carol's face. They both know what is going to happen.

"You captured, abused and tied this bitch up," the Lead Trainer explains, "Now it is time to make it up to her. Make her cum with your tongue or my cock replaces the plug. Got it?"
"Yes, Master," Carol quickly answers with fear, "Thank you, Master."

He smiles as she starts to quickly lick her former co-worker-turned-captive's pussy. His threat was an empty one, as his cock is too big and might stretch her asshole too much. That would lower the value, as Buyer's love to truly break in the ass of their Slaves.

He shoves his cock into her pussy now, fucking her hard and fast. This bitch deserves it!

Moments later, the somewhat-slutty Vivian and AJ are nearing orgasm.

"May I please cum," Vivian says.
"Me too," AJ says, "I need to cum too."
"Give them 5 on their cheeks and then they cum," the Lead Trainer replies.

Before the pair can ask what he means, the two other Trainers start to spank the naked ladies. They cry out in pain, but are still filled up with cock.

After they each take 5 swats on their lovely asses, they take their cue and cum. They cry out loudly, having lost all shame at this point.

Sandy is approaching her own orgasm too, although she is trying to hide it. The Trainer can recognize the strain on her face.

"If you want to cum, you had better ask," he says, "Don't try to hide it from me, bitch!"

Sandy nods in submission, her ruse uncovered.

"The same goes for you too," he adds, slapping Carol's right ass cheek.