I covered her neck and shoulders with kisses as my hands explored her sides and back. I slide one hand between us and started to fondle her breasts. She moaned louder, and slipped her hand into my pants, firmly grasping my hardness and pumping it slowly. I knew that it wouldn't take much of that, so after a few minutes I spun her around so she was facing away from me. I pulled her arms up and draped them over my shoulders. She shuddered. My hands explored her belly and breasts as my lips caressed the nape of her neck, ear, and jaw line. I slid a hand down and cupped her sex, she gasped, and I felt her heat and wetness in my palm. I began to gently masturbate her while my free hand played with her erect nipples. My cock was so hard feeling her naked body wiggling against me.
After a few minutes of this she grabbed the hair on the back of my head with both hands and twisted to look at me. "I want to feel you inside me" It was a simple but profound statement. I guided her over to a spare cot nearby and pulled her down on top of me. She deftly stripped me and climbed onto me, lowering herself slowly onto my hardness, both of us gasping as she enveloped me. Slowly she rode me, with my hips rising to meet her with each downward stroke.
She smiled down at me and then lent over to the nearby shelf and grabbed a package of roller gauze. Ripping the package open she unwound the roll and with practiced hands she tied my wrists to the head-bar of the cot. I thought about resisting, but decide this could be more fun. When I was helpless she continued her ride, her fingers gently scrapping my chest and tweaking my nipples. It felt like forever, but both of us began to breath harder and become more vocal, our grunts and moans echoing of the cinder block walls. All of a sudden the alert siren went off in the garage, telling us that we had another call. We stared into each other's eyes and bucked one last time hard and long, pushing us both over the edge in a pair mind-blowing orgasms. She collapsed on top of me, our hearts pounding.
After a very quick kiss she untied the gauze from the bar, and we scrambled to get ready, managing to get into the garage as my partner sleepily walked out of the crew quarters. He looked at me weird, and asked what was on my wrists. I looked down and I still had the gauze tied to my wrists! I muttered something about practicing "violent patient restraints"; he shrugged and climbed into the rig. I quickly pulled the gauze off as Monica laughed.