We collapsed in Megan's bed, drenched with sweat and other fluids. As I slept, I dreamed of running free in a field before finding a centaur with Megan's torso. I mounted her and mated her.
I woke up with Megan in my arms, my massive erection pressing between her ass cheeks. I fondled her breasts. She stirred.
"If I thought there was any chance of that thing fitting in my ass with injurying me I'd let you have at it," she said. "It barely fit in my vag, and I don't think I'm going to be able to walk straight for a week." She sighed. "I never dreamed I could be fucked so good."
"How about we get cleaned up?" I suggested.
"Mmm...good idea," replied Megan. She slowly slid out of my arms and out of bed onto unsteady feet. She staggered toward the bathroom. I sat up in bed, watching her and her pretty ass. She stopped and braced herself against the door frame for a moment, looking back over her shoulder to see me staring at her and see my throbbing erection. She smiled and continued her way into the shower. I followed, noticing my legs were definitely hairier than before.
In the shower, we kissed and caressed as we cleaned off, and she stroked my horse cock. Finally she went down on me, gagging at first on my giant member before getting used to it. She finished me, and to my surprise let me blow my load in her mouth. She couldn't take it all and let me go, my fluid gushing from her mouth and running down her body. She began masturbating with my semen as lubricant, and quickly brought herself to climax, despite her soreness.
After cleaning up and drying off, we tried to figure out what to do next. My running shorts were destroyed so I had to borrow a trenchcoat to get back to my own dorm, hoping it would stay closed on my walk back to my dorm. Megan assured me she would clean up her room, and promised to visit me tomorrow for some more fun.