Program them

"Okay, so first," Mark told his mom and sister. "Anything you hear in my room from now on, you will ignore. Whether it be sex noises or anything like that."

"Yes, Master." both girls said. That would prevent any further problems from them.

"I like both of you calling me Master," Mark said. "So how about this? From now on, even when out of trance, both of you will refer to me as 'Master', unless speaking to someone not under my control."

That would divert suspicion. "Yes, Master," they both responded.

Mark couldn't help it and stripped out of his pants and boxers. "Mo-no, Robin," he said. "Suck me off."

"Yes Master.

His mother slid to her knees and began to suck his cock.

"Ah, Jesus!" he moaned. She was good at this. "Ashley, turn around and shake your ass for me."

"Yes Master."

Mark's elder sister was soon shaking her butt while his mother gave him his first blowjob.

"Okay Robin, stop," Mark instructed. He was close to coming but didn't want to waste his load just yet.

Robin got to her feet.

"Now spank Ashley for always being a bitch to me."

"Yes, Master," Robin began to smack Ashley's twerking butt.

Mark opened his closet door to see the Dreyfuss women in a trance. The only sound in the house was the sound of his mom's hand smacking away at Ashley's butt.