Lie Detector
"I'm all set up, get your butt in here and have a seat" Lori called from the other room. She'd just gotten her newest toy in the mail, and was excited to put it to use. Usually the arrival of a new toy would be bad news for Bill, and this was no exception, though it was more about digging around inside Bill's mind than his bussy. I put my novel down and followed the slave as he made his way to today's activities.
Bill's restraining chair was set up facing the TV and Lori's desk, which had her laptop and a new machine with several wires running to some bands and cuffs. Bill got in his seat without any protests, but clearly nervous about what this thing was going to do him, and probably starting to feel the buzz from the weed gummies we'd fed him earlier. I helped Lori strap him down, not very tightly, we wanted him to be comfortable.
Lori loves an excuse to play dress-up, so she had her 'mad scientist' kit on; a lab coat, horn rimmed glasses, comfy slacks and sneakers. She was sitting at her desk, still reading the manual and adjusting things on the computer.
"Okaaay, lets get you all hooked up, slut" she said while getting up. The biggest cuff went on his thigh, one on his arm, and the last one, after his chastity cage was unlocked and removed, went on his cock. She went back to the desk, and seemed happy that it was working.
"We're gonna watch some fun videos, today! You don't have to worry about anything hurting you unless you do something stupid. This thing," she tapped the box the cuffs plugged into, "is a penile plethysmography machine. They use it on sickos to detect arousal when showing them things they shouldn't get excited seeing. Kids and such. It measures blood flow into your cock. Ash, sweetie, could you come here?"
I got out of my comfy chair and moved to stand beside her. She told Bill to keep watching, then reached up to caress my breasts and take a nipple in her mouth, kissing and suckling, moaning. I ran a hand through her hair and smiled at Bill.
After a few moments of this, a little blue line on the laptop screen wiggled just a little more. "Is that the one?" I asked, tapping at it.
Lori gave my nipple one last peck, then turned back to the computer. "Yep! He's such a sucker for a girl-girl show, typical man." Another line in a different panel showed his heart rate kicking up a few BPM. She smiled wide and clapped her hands together.
As I went back to my chair, the TV flicked on. "Now, slut," Lori was explaining to Bill, "it's important to not take your eyes off of the screen. No looking away, no looking at your owners or begging. And answer any questions I ask without lying. Are you comfortable, anything pinching?"
"No, mistress, thank you."
A couple clicks, and a video started playing. It was taken in this very room, early on in Bill's new life with us. He was tied up in a standing spread eagle, facing and looking right above the camera, right into my eyes as I held it. Lori stood behind him, holding a cane. The clip started well into this session, and Bill was leaking tears. She wound up, and struck again right across his buttocks.
Whack!
The poor slave yelped, then counted "Twenty-seven!"
Whack!
"Twenty-eight!"
Currently, Lori asked "Do you remember this one? What did we count to?"
"I don't remember, mistress, sorry."
"This is from the time you 'forgot' to putt your Reminder back in after bathroom duties, it goes all the way up to forty." The video played for a couple more minutes, until Lori paused it. "Hmm, you don't get aroused from that, no surprises there, we know you aren't a pain-slut."
The next video came up. Bill was strapped to his narrow bench, the shot in profile from the side, with his feet in stocks and his toes tied to the top fully exposing his soles. He often has this done when we're giving him some bastinado striking (not bad enough to make him disabled, ofc), but this time I was tickling them, while Lori attacked his sides and armpits from her position straddling his hips. Bill is very ticklish, and he was trying very hard to not make any noise. The microphone dangling above his face turned any noise into painful electric shocks through his nipple clamps. Everything was quiet for a minute, but as the video progressed his occasional outbursts of laughter, followed by his grimaces of pain, grew shorter and shorter. After Lori came on his cock, we swapped places and I had my go.
In the chair with the cuffs, Bill was shaking his head but being obedient and not looking away.
Lori told him to stop biting his lip, but was smiling at her screen. "Oh, look here. You're getting a bit bigger. Seems like we have a winner. What's your favourite part of this video, slut?"
"I don't like any part of it, I hate it!" Bill shot back.
"Uh-uh, I said no lying. Try that again and I'll get the cattle prod out. You're aroused, the machine doesn't lie. What's your favourite part of this video, you horny thing?"
Our slave was panicking, realizing that Lori was getting information he thought was hidden away inside his head. He was stammering to find the right thing to say, cutting himself off constantly. On the screen, I was grinding my pelvis onto his, mouth open and breathing hard, my breasts heaving and my fingers driving him wild as they flittered across his ribs. He made some noise and his face scrunched up as he shook his head side to side as the current flowed.
"I don't know, I guess that you actually use my dick, here?"
Lori smiled, her almond eyes twinkling. "You like it when we use your cock, even after all the horrible things we've done to you?"
Bill was determined to defend himself. "I can't help it! I hate it!" He was on the verge of tears.
Lori brought the next video up. It was one we'd watched plenty of times with our slut. It was shot in POV, with yours truly holding the camera. Bill was made up pretty, with his hair in a ponytail, some rouge on his cheeks, and some subdued lipstick. When we'd taken him as our slave, one of the items we took from his apartment was a hard drive, and it contained Bill's normie porno collection. He'd admitted that one video was a favourite of his, and in our version he was recreating it scene for scene, with his slippery asshole playing the part of porn actress coochie.
Lori fast forwarded to the part where our slut was between my legs as I sat on the couch, his hands on my knees and looking back over his shoulder, driving his butt down onto my buzzing strapless dildo. It had required a few reshoots for him to properly capture the way the girl in the video had moved her hips circularly, making sure the stunt-cock felt every part of her pussy.
"Oh," he said in a higher pitched voice, "your cock is so big inside me, I'm gonna cum." He then gave a fairly convincing fake orgasm and smiled at the camera.
Back in the present, Bill was turning red. He has made it clear he despises this video, he knows it's almost always the prelude to one or both of us going spelunking into his guts.
"Oh. My. God! Ash, look at this" Lori practically shrieked. "He likes it!"
I went over and looked. The blue line was considerably larger. His cock wasn't noticeably bigger, but I know our slave well enough to know when he's been caught. It was practically written on his face.
