A true and new thrill of a massive cock made Emily cry for another romp. As she lay over the hay bales the two friends began to argue stallion style over the next round.
Sam being the older of the two whinnied and pranced about with an erect cock flaying about. Bob was also ready and stood near to Emily his cock erect and stiffer than before.
Emily at this point was feeling the satyristic lust flowing inside her body. As the two stallions argued and mouthed their lusty desires she watched her toes begin to merge.
Giggling with desire to enjoy satyr sex again eyes watered with joy. A feeling of hairy belly pressing down her back brought the coming of a wonderful big cock. A turn to her side found Bob mounting again.
The big shaft quickly found it's mark. As her lips of sex parted she felt a strange movement. The member wiggled easily down into the depths of her warm body but as it began to thrust she closed her eyes.
The feeling was very different as she felt her butt moving about. The cock too had the feel of her vagina's walls moving past again and again. Breathing was heavy as the thrusting made her tired. Then the surge of semen rolled down the length of pony cock. Emily could feel it's movement and the jetting as it spewed into her body.
However the warmth she'd felt before of her soaked womb was not there. Instead she had a strange feeling of movements. As eyes opened she let out a scream.
The sight of her back and shaggy head was in plain sight. She looked down at the slowly moving form of what was her body. A look to her rear showed large hindquarters and a swishing hairy tail.
As she stood up and the massive pony cock withdrew it was a wild sight. The second round of transgenis sex had transmigrated Emily to Bob's stallion body and no doubt Bob was trying to figure out why he was a changing satyress.