As the orgasm finally receded, I was slumped in my restrains, trying to catch my breath. Even after the cold shower Sarah had given me, I could feel the heat radiating from my body. Sarah went back to massaging my legs and Peter was rubbing my back. It was heaven. Sarah began adding more oil to my back and butt, rubbing it all over. I could feel it start dripping down the crack of my ass.
Sarah's hands moved all over my glutes, massaging them and getting closer to my private parts with every pass. Soon she was between my legs, moving my clit around with the knuckles of her hand. I sighed, resigned for another wonderful bath of sensations. Her other hand was working the small of my back and began to move down towards my asshole.
With the help of the oil, Sarah ran her thumb up and down the crack until it was right on top of the opening. She massaged the oil around it, making sure that everything was coated with the lubricant. I started to exit the fog of pleasure while she was doing this.
"Sarah, what are you doing?" I sheepishly asked, it was as if speaking was going to break the spell. Peter reached forward and pulled my hair back.
"What did you call her?"
"Uh, ma'am? I mean ma'am what's going on?" Sarah didn't answer, but I could imagine her smirking. "Sir, sir, what are you doing? What's happening?"
"Ada." Peter said condescendingly "If you continue to speak out of turn, we're going to have to put the gag back. You don't want that do you?"
"N-n-ooo..." I trailed off
"Great! So, you can make all the noises of pleasure you want, in fact we encourage it. But nothing else. If you do as we say, we can make this next part a little easier on you." Peter paused, I assumed it was to see if I was going to speak out of turn again. I didn't fall for his trap this time. "See, you're getting the hang of it already."
Sarah, who had continued to massage between my legs the whole time, began to put pressure on my asshole. The pad of her thumb began to open my anus. Not wanting to anger the couple again, I started to make sounds of an injured animal, whining and panting. The couple just laughed and continued what they were doing.
Sarah's thumb started to make it's way into my asshole, which burned at the intrusion. The muscles spasmed around her finger, trying to push it back out. I gasped, continuing to make as much noise as I could without any words. The finger moved in an inch or so before retreating, giving me a moment's relief before plunging back in again, working the oil further into my hole.
As she was doing this, her knuckles were working my clit over, but it wasn't exactly pleasant. They stimulated me enough to work myself up, but not enough to go over the edge. Peter was still rubbing my back and shoulders, not paying any attention to what was happening at my back door.
The thumb moved in and out, pumping very slowly, allowing my anus to get used to the size. As soon as I felt like I could maybe take it, she moved further in. Soon she was using the entire length of the digit, rotating it once she got to the bottom of the stroke. Once she was satisfied, she plunged the finger in one last time and wiggled it around in my hole, causing strange vibrations in my body. I had never done anything like this to myself, so the sensations were foreign and weird.
Sarah removed her fingers and stood up to wash her hands. I could hear the sink running and her walking around the back of the bathroom. She was still wearing heels from before and the quick glance I had gotten of her before filled my head: black lingerie with straps crisscrossing her body. I heard her heels draw closer again and she resumed massaging my butt. I was going to melt at this rate, all the pampering it was getting. But she was focused again on my asshole. I was so disappointed, if they could just continue massaging me, I could almost forget they were holding me here against my will.
He hands were cold from the sink and I could feel goosebumps appear on my legs. She ran her thumb down my back again, stopping on top of my rosebud. She began to press in again, but I felt like something was off. Instead of staying the same width, her thumb felt like it was growing wider and wider. I couldn't help myself.
"What are you putting in me? What are you doing!?"
Peter laughed, moved to the back of the bathroom, and then appeared in front of me holding something in his hand.
"Do you see these?" He said, holding up little clamps in front of me. "These are nipple clamps. They attach to those little buds of yours and hold them tight. If you don't shut up right now, you're going to get the gag and the clamps. Understood?"
I blushed, thinking of the clamps on my now extremely sensitive nipples. I almost wanted to say something, I think I'd love the feeling of them on my breasts. But I shook my head "no" and slumped in the stock.
"Good, that's what I thought. Now, if you must know: Sarah's putting in our favorite little butt plug into our favorite little plaything."
I gasped and Sarah took the sign to start pushing harder. With every inch the plug was inserted, it grew in girth. Soon it felt like Sarah was never going to get the thing into me. One of the couple started to play with my clit, trying to relax me. Sarah began to pump, getting a little further every time, but never making much headway.
"We need you to relax honey. If we can't get this in, we're going to have to start all over again!" Sarah said. She was twisting the plug with ever plunge and dripping more oil on it to try to get it to go in. I was making strange noises, a mix of moaning and whining. I didn't know what to do with myself. I tried to focus on my anus, which wasn't too hard actually, but trying to consciously relax it was difficult. It must have worked though, because I heard Sarah cry in joy as the plug sank into my hold. She turned it around, making sure it was completely seated and not escaping.
She and Peter stood up, taking their hands off me and I mewed in discontent. They, once gain, busied themselves in the back of the bathroom. I heard wheels rolling on the tile and a little motor start up. I tried to stain my neck around, but it was too hard. Nothing looked shiny enough to give me a reflection to see the behind me.
They began playing with the plug again: testing it to make sure it wasn't coming out. I actually began to get concerned that it was never going to come out. My anus seemed to have clamped down on it hard. Once they were content with the plug, Peter came over once again to me. His penis was once again erect. I was worried that he was going to make me suck it again. I hadn't like the experience as much as everything else that day, so I was reluctant to do it again.
"Now, we have something special for you." I didn't like those words. "Sarah's going to start your... irrigation."
I opened my mouth to say something, but Sarah must have pressed a button and I felt water rush into my bowels. It was a very strange sensation, like going to the bathroom in reverse. My stomach began to cramp and expand. I couldn't say any words, the feeling was just so unfamiliar that my mind struggled to put any thoughts together. I opened and closed my mouth several times as the water worked its way into me.
"Yeah, it's a little weird, but you'll get used to it. We have the machine hooked up to your plug, it will automatically fill and relieve you. We need to make sure you're nice and clean for the rest of the day. That bath tub can only do so much." Peter was smiling at my look of confusion. I strained to look beneath me and I could just barely make out the pads my knees were sitting on. My stomach was visibly distending, making me look more pregnant each passing second.