The restrains were cutting into my ankles, watching my wife squirm on the coffee table, Sarah's fingers wriggling inside her. She looked at me then resumed her manipulations of my wife's pussy. I watched as she dove into her black bag and pulled out a butt plug. My eyes widened and I shook my head. I had toyed with the idea of anal, but Jessica always pushed my hands away. The one time I had managed to insert a digit Jessica jumped and pulled away from me. She didn't like it, but I could only plead with Sarah through my eyes. She ignored me.
Strapped to the chair, all I could do was watch as Sarah brought the plug to my wife's soaked pussy and slid it into her. Jessica moaned and dropped her hips down onto the toy like she wanted to engulf the whole thing. My cock jumped at the sight of my wife so full and enjoying it. Sarah flicked her thumb across Jessica's clit making her hips buck, before removing her finger and pulling Jessica's arse towards her and off the coffee table. I knew what was coming but I could do nothing to stop her. I watched her remove the toy from Jessica's pussy and slide it down to her arse. I struggled against the restraints to no avail. Sarah looked at me as she slowly pushed the plug into my wife's arse.
To my surprise Jessica did not resist. A moan escaped her lips as she lay there, her arse filled and stretched with the plug deep inside. I began to pant. My cock continued to twitch with every new sight, every new experience my wife was having at the hands of my co-worker. Sarah moved her fingers back up to Jessica's pussy. I watched as she turned the vibration of the butt plug on and drove two fingers deep into Jessica. Sarah pulled the saturated cloth of the g-string aside so I had a clear view of the plug deep in her arse and Sarah's fingers pumping in and out of her cunt. Sarah resumed the sucking of my wife's clit and slid another finger into her pussy. Jessica was almost screaming, her head rocking back and forth. All I wanted to do was grab her hips and drive my cock deep within her, but I was trapped in a torturous position only able to watch as my wife came for a second time.
Sarah didn't relent. She turned the plug vibrations up a notch and slammed four fingers into my wife's pussy. My cock strained and ached at the sight before me. I hated this night and loved it all the same. My mind kept screaming 'let me fuck her, let me drive my pole deep into her soaked cunt,' but I could do nothing. Sarah held fast on my wife's clit as she drove her full fist into her. Jessica rose her hips off the table. I was panting and sweating at the image of Sarah thrusting her whole fist into my wife's drenched pussy. I imagined how tight it would feel around Sarah's fist and I wanted to explode. Completely filled, my wife thrusts her hips towards the ceiling and came again. Sarah held on to her pussy, fist still deep inside her.