Riding lessons

A few moments later I hear her footsteps approaching down the hall, noticing she had changed into new clothes as she walked pass . I hear her footsteps stop, turn and approach the open door. She stood there, eyeing me and the machine before letting out a sigh and pulled her shirt over her head to reveal a lacy bra. Her hands quickly pulled down her jeans, revealing a matching set of panties. Kicking the jeans to the side after stepping out of them, she walked over to me, her hand reaching over me and grasping a remote control. She hit a button and my world burst in vibration, the platform underneath my head shaking me. She hit the button again, my vision swimming as I try to get it to focus. I watch as she unclasps her bra and pull her panties down before swinging a leg over my face and sat down on the improvised settle that was my face. My nose got buried into her asshole as her weight settled on top of me, my mouth sealed tightly against her pussy. Figuring I should play my part, I stuck out my tongue to mimic the appendage that usually stuck out on these devices. I felt her shudder as my tongue slid between her labia, pushing against her concealed clit. The was the last thing before she must of hit the button again, the machine whining to life and shaking my head. I felt her thighs clasp around my head as the vibrations worked up through my head to the top of my tongue and nose, massaging her most sensitive parts. It didn't take long for her to start to rock her hips back and forth as her clit grew out of its hood, pushing against my tongue. She started grinding her hips and ass against my face, her pussy leaking her juices as her body got excited. I felt her lean forward, pressing her pussy harder against my mouth as she kept on grinding her hips against my face, bracing herself my placing her hands chest as she leaned forward. It didn't take long as I felt her thighs spasm, gripping the side of my head as she cummed against my mouth. But she stayed where she was, of anything grinding her pussy against my tongue and lips even harder. Her nails dug into my chest as she ground her pussy back and forth, leaning back from time to time to press my nose against her asshole. She cummed a second time, her orgasm taking over her body longer this time, her thighs gripping my head as if she was trying to crush it. Thinking she was done, I expected her to climb off but she stayed put once again, this time slowly grinding her pussy against my mouth with a slow but firm rhythm. Her orgasm came quicker this time, her pussy must of been more sensitive due to her past two orgasms. It felt like she was pushing her ass down hard against my face as a scream escaped her lips. As she came down from her orgasm, she turned off the machine and just sat there straddling my face, her breath ragged. She suddenly stood up on shaking legs, tossing a leg back over me. I gasped for fresh air, the smell of juices overwhelming my sense of smell. Grabbing a towel, she cleaned off my face before walking out of the room, holding on to the walls and door for support. I layed there not being able to do anything else, wondering how long it was going to take to recover.