Mine would be sleeping in bed with a female staffordshire who had at least one litter of puppies, her vulva was massive even though she was not in heat. I knew her temperament was leaning on very docile, but still you don't know an animal until you've spent a lot of time with them. I took a chance this one night and decided to strip naked and spoon with her for an hour or so. If you're familiar with Staffies, their bodies are quite muscular, and they're good sized dogs, so just holding her was such a pleasurable experience. But I won't lie, I had a raging hard on that wouldn't go away. I slowly positioned myself lower and behind her, in textbook doggy position but lying under the sheets, and gently poked at her with my cock until I felt her soft vulva on the tip of my penis. She didn't even flinch, which surprised me. So I gently pressed the tip of my cock into her vulva with slow, undulating movements to generate precum, since I didn't have any lube. That didn't take long. I could feel a gradual wetness on the tip of my cock, and her vulva opening up ever so slowly as I was able to insert the tip of my cock a bit deeper. And then a bit more. I remember getting deep enough where I could start feeling muscle contractions, and the sandy texture of her vagina, as I slipped deeper in. I had dripped so much precum that her pussy was fully lubed, and before I knew it I was balls deep. Within seconds I shot my load, and she must have sensed it because her vaginal muscles would quickly contract around my head each time my cock pulsed and pumped cum into her pussy. The sensation of her muscle contractions on my tip forced me to keep pumping, and I would say resulted in the longest orgasm I've ever had in my life. It was absolutely mind blowing. I've never experienced anything like that before, or since.
