Riding The Cowboy

Finish me off in ten minutes and you win that horse.

For her birthday, Mary visits the ranch of eccentric billionaire Carl Shank. After learning of Mary's love for his prize horse, Freya, he gives Mary a proposition she can't turn down. Make him ejaculate in under ten minutes and she wins his five million dollar horse, Freya. Mary accepts the challenge but does she perform under pressure?

Extract:
"I moved my head up and down, his thick member filling every inch of my mouth, its veiny base shimmered with thick saliva each time my suckle retreated. I pushed my face down and hard, forcing my lips toward his neat, trimmed public hair, driving his cock deeper and deeper down my throat. I heard him make a small whimper as my upper lip was tickled by his coarse hair. I glanced upwards, giving him the sexiest look I could, my eyes begging for his cock. His eyes were shut.
I realised he was trying to zone out, distance his thoughts to prevent an early finish and win the bet. My heart leapt, I had to do something. If my mouth was not filled to the brim I would have yelled to bring him back to reality. I had no other choice.
Removing my right hand from the side of his thigh, I quickly thrust my palm around his testicles, gripping them firm and massaging them between my grasp. In shock his eyes flew open, his mouth open and gasped. He tilted his face downwards to look at me, jaw still lowered. My eyes narrowed and smiled at him, having caught him out from his evasive technique. Nice try, I thought, his mind was firmly back in this moment."