"How many cocks you sucked off before this one?" she asked.
Like I could talk right now. "Mmmmmmphhhh", I managed between gagging.
"I betcha lost count long time ago, huh?" She laughed, knowing full well I had.
Lisa had turned me into a human blowjob fucking machine. I was literally strapped down, head in a harness with a rod attached to a variable speed motor. My arms were fastened behind me on a small table that was bolted to the floor. My knees and feet were spread wide open and attached to the floor with steel rods. I was completely immobile except for my fingers and toes. I could blink my eyes to respond to questions but mostly I just remained motionless unless the motor was on.
The guy whose cock was in my mouth reached down and turned the dial up. "Let's see if this bitch can handle it even faster," he said.
"Bet you a dollar", replied Lisa, holding up a wrinkled bill.
"It's a bet", he laughed as he pushed forward making his cock go even deeper into my throat.
The hum of the motor strained with each thrust. I screamed but nothing came out of my mouth. The machine pumped my head onto his cock for what seemed like an eternity. Finally he eased back, I stopped choking and caught my breath.
"You win dammit!, fuckers got a nice deep throat, the kinda likes I've never fucked before."
I felt the vibrations start and could see that Lisa was playing with the remote again.
In addition to my restraints I was impaled on a huge vibrating dildo that was pressing against my prostate. Another vibrator was attached to my chastity device and locked in place. I'd been close to orgasm from the stimulation but Lisa would stop before it could happen leaving my balls aching for release.
The guy stepped back, my head kept moving, driven by the motor. The ring gag kept my mouth wide open. Drool, spit and precum spilled out and dripped from my chin covering my DD breast implants in slimy mess.
He reached over and turned the dial off, I was relieved for a moment free from his cock. He reached for his pants and pulled out a folded stack of cash. He pulled a dollar bill from it, crumpled it up and threw it at Lisa.
"You win asshole, I should know better than to gamble with you."
Picking it up from the floor she said, "Well you got about five minutes to bust a nut then we gotta go get some shit from the store for tonight."
He turned back to me, his cock still hard and dripping with my saliva.
"Open wide cunt", he laughed. Like I had a choice in the matter.
He pressed into the back of my throat and turned the machine up a notch faster.
"Grruuuuummmmmfff", my body tensed as I felt my gag reflex kick in. The vibrations on my caged cock, anus and prostate pulsated involuntarily. The stimulation was just too much and when I felt it start there was nothing I could do to stop it.
My ruined orgasm was obvious from the sperm leaking out of my chastity.
"Fuck, now look what you made me do", Lisa said. "I wanted to keep this bitch on the edge for days beggin me for relief."
"Now we gotta start all over again, dammit."
The guy ignored her. I could tell he was getting close.
My body was limp after cumming. I would have rolled over for a nap had I not been strapped to this machine.
My head continued bobbing forward and back. My tits swayed and bounced with each thrust. The guy did nothing but stand there - the machine, my mouth and throat did all the work.
His first shots of his cum erupted, I could't do anything as it coated my mouth with a salty pungent taste. It lingered and I couldn't even swallow to get rid of it.
He stepped back and turned off the machine. "How much do you thing we can make?"