The fantasy was going out of control, and Mary could find no way of stopping it; then the big dog began to twitch and jerk on her ass, and she felt his hot juice shooting up her snatch.

The fantasy clicked off instantly. She was alone in her room again, alone with her dog and he was panting in frenetic delight as he shot her a full load of sperm, then paused to rest against the smoothness of her ass. Finally, he dismounted and curled up on the floor to lick at his well-used cock.

Mary usually felt beautifully content after the dog had screwed her, but this time the same glow wasn't with her. Wanting her come, she knelt up and sent a hand into her crotch, a finger finding her hard clit near the top of her gash.

Refusing to think back to the fantasy which had been so painful, she looked at her four-legged lover as she fingered her twat, looked at the reflection of her big tits in the mirror, seeing them jerk and sway, feeling the promise of orgasm growing stronger and stronger.

And then it was there, a beautiful big come, and she panted and moaned and grunted, her big ass jerking strongly as wave after beautiful wave of orgasm swept over her and washed away the ugliness left behind by the cruel fantasy, washed it away and left her feeling gloriously content as she knelt back on her haunches while the dog looked at her curiously, as though wondering what all the fuss was about.

And then Mary noticed the time. It was a bit later than she thought, and her daughter could be home from school soon. Chasing the dog out of the room, she picked up her panties, stepped into them and snugged them around her body, covering but not destroying the glow she felt, especially in her crotch.

As she dressed, she told herself that it was better when she fucked the dog at night since she didn't have to get dressed later, but could lie in bed, naked, savoring the golden post-orgasmic glow until it blended with sleep and she drifted gently away.