Ciara was engulfed in the taste of the gag in her mouth, the weight of the lady sitting on her back and the sudden unexpected pain from the strap every now and then when her owner thought she was slacking. The embarrassing point was her pussy juices were flowing down her legs and she craved the organism so much it hurt but the woman on her back would decide if she were allowed to cum or not.
Agnes was now feeling that lovely twinge between her legs that feeling of power was causing her pussy juices to flow slowly down onto Ciara's bare back, it was a beautiful feeling. Ciara felt her back get damp and then noticed the womans pubic hair was getting soft with wet, as it rubbed on her back. Agnes thighs clamping her and were starting to sweat as was her ass. Ciara glanced in a mirror to see Agnes face, she was startled.
Agnes had a look of superiority it was scary, she looked so confident as she sat in what she seen as her rightful place on the back of her new pony slave.
Agnes yelled "stop slave". Ciara stopped thinking her ordeal was over but it was not. Agnes began to rub her crotch on Ciara's back and moan, she was getting herself off as she sat there. Ciara felt shocked, Agnes was using her as a human dildo. It took Agnes about 5 minutes to cum and when she did she showered Ciara with her pussy juices. Ciara was drenched in the juice and she thought Agnes would now release her form her role. but no.
Agnes stood up for a moment rub her pussy and then sat back in position on Ciara. Ciara was shocked she was cover in cum and yet the ride would continue.
"Move pony" shouted Agnes and gave Ciara's ass a sharp slap with the strap. Ciara's nightmare continued rider and pony began to move again. Her rider now rode her with her head up and sagging breast pushed out, her back straight. Ciara's knees and arms were having trouble supporting her rider but she knew she had to continue or there was definitely no relief for her.
Then the realization of her situation under Agnes filtered into her mind. She was nothing more than a pony to this old woman, a human dildo for her use. Ciara's pussy was pulsating with the need to cum, her nipple as hard as steel and on she moved.
"you need to cum pony" smirked Agnes aware of the young girl's plight and her power over her.