His head was resting on my shoulder as he attempted to leverage his orange-sized knot into me, pressing hard as he growled in passion. My four inch prick was rock hard at the idea of having that giant cock and knot fully put into me. I tried to drive my ass back in sync with his thrusts, desperate to be properly bred. We established a brief rhythm for a few strokes before we synced up perfectly. With an extra forceful thrust forward by Mac and an extra forceful thrust back by me, I felt my butt wrap around his knot for a brief, beautiful moment before he drove it into me completely. Every inch was inside my ass, and the way he entered me hit my prostate in an absolutely orgasmic way. “Mac!” I moaned in pleasure as I climaxed hands free, my small cock shooting cum into the bathroom floor as Mac shot his into my ass. My whole body spasmed as I had the greatest orgasm I had ever known in my life, my entire body feeling as if I was wrapped around this brown pitbull’s amazing cock. His cock squirted even more cum into me as my asshole spasmed in pleasure around him. As my orgasm subsided, my mind became a bit clearer. I felt a little weird, after all this was the dog my girlfriend just brought home. Was this really safe? Did this count as cheating? As I pondered these questions, I turned my head to the right to try and see what Mac was doing back there. He was happily panting above my back, dripping a bit of drool onto me as he continued to unload his canine seed inside me. “Was I a good bitch, Mac?” I asked sarcastically. He answered, as usual, with a kiss. I closed my eyes and kissed him back, of course. The feeling of his tongue in my mouth and his cock is my ass was just pure happiness in that moment. While I’d never been in anything close to this position before, it felt totally natural in the moment.
15 minutes of tongue sucking, knotted nirvana passed before Mac felt the need to pull out. I had felt his cock shrinking for the last five minutes, and tried tightening my ass’s grip on him for a while, but couldn’t last forever. He slid out with a light pop and I immediately felt a gush of dog semen begin leaking out of me. Mac licked at my abused asshole for a moment, cleaning it up a bit before turning his attention to his now shrinking cock. Exhausted, I rolled over onto my back, trying my best not to leak any more cum onto the floor. “Wow, Mac, you really had a lot of pent up energy, huh?” I said, looking over at him licking his massive manhood clean as I laid in my own cum leaking Mac’s sperm. Still enamoured by his dick, I crawled over and began licking it with him. As I ran my tongue over it yet again, I could taste my own ass mixed with his cum, but I didn’t mind. At this point it seemed natural that I ensure he was licked clean, since the original goal was to clean him up to begin with. Once his cock was spotless and receding into its sheath, I gave his balls some kisses as well. “Thank you so much for using me, Mac…” I cooed as I lovingly worshipped his furry testicles. I spent about 30 seconds on one before alternating to the other, licking and sucking on each one gently yet firmly to show my appreciation. Mac just laid there, panting as happily as he always did. Once I felt he was sufficiently appreciated, I went to clean up the floor, since I didn’t want my girlfriend questioning why my and Mac’s cum were mixed together on it.
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