As the fright of now being both donkey and a jenny too hits home the jenny lowers your head. Hind legs straddle wide as the tail is held high. You thoughts scream, No Way! Yet the donkey you truly are wins easily.
The feeling of hot breath snuffing your butt brings a thrill over you that should make you kick. Instead the big gray Jack mounts in a bound. As legs straddle your guts and hold him secure aboard his dominance is assured. A little struggle on your part is minor and the weight of ole' Jack is holding you in place.
The feeling of female juices running down those lips of jenny sex gives a tickle. A poke and then another as the Jack searches for a warm wet hole. A bray slips out of your lips when the Jack's shaft rams in without notice. As a human you'd never cram the cock into a girl like this beast is roughing with you.
The meaning of beastial humping now has new meaning as the Jack urgently tries for release. You want to kick and pull away and him out, but the jenny part of you just loves the feeling.
On he continues as you think your guts will burst. The hot stream of Jack semen rushes into the open womb. You hope he's done but it's a forlorn hope as he begins into round two.
The old lady watches your humilation as the stable groom laughs openly. "Ram it, ram it, fuck her one for me!" yells the stable groom.
The old lady is enjoying the pagent but turns to the overly thrilled man and asks if he's so horny that he'd wish to go out there and help the Jack. The words scare the man and he walk's away looking at the old woman with fear in his face.
You look at the old woman and read her lips as she says, " Five years, five foals and I'll consider changing you to a man!"
Those five long years might become five decades, but for now your being humped again.