Excited at the prospect of using his grown bigger tool, he begins to breath rapidly, this adding increased bulk to his chest and muscular body. He smiles with still thick and rubbery like lips at this girl who excites him and he is for her a thing of arousal. Each looks hungrily at the other, each with the sudden want for gaining a mutual sensation.
Cat is unafraid to reach out her soft petite hand and touch it, grabbing it and squeezing it, she throttles the thing then with both hands, giggling from the joy of her touching what her folks suggested was meant only for those married.
Her touching and squeezing brings on a rush of one massive arousal, he shudders, saying to Cat, "I remember wishing the first moment I stepped into the trailer of wanting to know what it would be like to have sex with a donkey, but you..., you are better than a donkey!"
Cat drops to her knees, she working her soft hands along the growing length of the mostly black colored shaft. She eyes the primal shaped head, it flat on the end but bulged to remind her of a mushroom, toilet plunger, and the ass end of some large snake the way the opening on it seemed to pulse, like it wished to kiss her on her lips.
Looking up at him eying down at her, Cat pulled his shaft closer to her mouth, she slipping out her tongue, did trace a lick around the puckered hole.
He shivered, turning his head toward the dark sky, he screamed the bray of a donkey stud claiming a jennet donkey as one of his herd.
The wild bray echoed the trees and hills around where they were, his donkey form beginning to return as he felt his maleness giving him a good reason to like being a donkey rather than to live as would a man. Even before she was ready, the donkey fellow gave a pelvic thrust and sent his bulging prick in, passing the lips of Cat, it entered her mouth and began dribbling salty juices, the poison that made him like he was, and would taint Cat to wish she could have her butt mounted, humped, and rutted often.
The two creature orgy began, and unknown to Grl, her friend had made a choice that would make a willing ass of a man, and a hairy ass of a pretty girl.