June licked tenderly at Mark’s penis, still gripping him tightly with both hands. A whole inch in height made him only slightly bigger from June’s perspective, but for Mark he felt as if he had gained an entire foot. He felt more substantial, and began to feel orgasm again. June’s gentle licking paid off, as Mark came for the second time, again ejaculating a full load of semen, this time onto June’s waiting tongue. She eagerly drank the horse’s jizz and then watched as once again he grew, growing from 13” tall to 14” in just two seconds or so. Mark whinnied his delight as his balls again filled up to their full size and he was ready to go again.
His penis throbbed intensely and the flesh refused to harden. June, consumed with lust and passion, lowered her still giant lips over Mark’s cock and began to suck. Mark came again with very little coaxing, growing to 15”. June sucked harder, needing his fluids, and Mark spilled them in no time. She felt him grow in her mouth, the horse now 16” tall. She sucked as hard as she could on the entire length of his penis, picking up rhythm. June put her hands underneath Mark’s firm masculine buttocks and picked him up, sitting up and sucking him as hard as she could. Mark’s incredible cries of climactic delight picked up volume, as he came again, and again, and again still, getting bigger and bigger every time and instantly filling up with cum. In no time Mark was into the male version of multiple orgasm, his penis as rigid and swollen as it could possibly go, throbbing in continuous pleasure and spurting a steady stream of ejaculate.
Soon June had a 26” tall horse morph gasping in delight as she sucked him off, and opened her eyes to watch his head throw itself back in pleasure and his body shudder. The sweat and warmth pouring off him was delightful, and the strong equine odor was irresistible. June sucked and sucked, and Mark came harder and faster, his stream of cum turning into a torrent as it was forced out of his churning testicles faster. In just a few minutes more Mark was 32” tall, and June could easily seat him in her lap and still suck his huge little cock.