The mare's scent was driving Josh insane. He wasn't sure how but it seemed to push out his free will, driving him to mate.
This must be how donkeys think. They're not perverts, they just don't know better. Either that or the mating instinct removes their free will so they can't say no.
Josh thought that he knew better. He was or at least used to be a human being. Eighteen year old or not, he knew that there was more to life then sex. Unfortunately, the idea of a life without worry that was filled with pleasure and fun was tempting him.
Just one more time won't hurt. You're a donkey now, look to the future. Don't let a form that's now in the past dictate what you can and cannot do.
Josh tried to think thoughts of something other then mating. It wasn't working. The desire screamed at him. He felt his donkeyhood lengthening, hardening and begging him for release. Images of mounting the mare flooded into Josh's mind.
Do it! Come on what are you waiting for? She's yours and she's waiting! Don't disappoint her! It felt good the first time didn't it? Why go back to a life of responsibility when you can have this?
Josh let out a loud bray in protest. This wasn't supposed to happen to him! Feeling a light tap on his rear end, Josh brayed.
"I'll give you two some privacy," the man said before leaving the coral.
Now alone with the mare, Josh thought about his situation. His thoughts were growing weak and his resistance was fading. He inched closer the mare and mounted her. His donkeyhood was so close to its target that he could feel the heat radiating from it. All that mattered to him was entering that heat and satisfying it.
"Josh, no!" a voice cried. It was Jesse's voice.
Josh saw Jesse standing beside the coral. Despite a desperate attempt to listen to his friend, Josh couldn't control himself anymore. The world around him seemed to almost fade as he thrusted into the mare