"Maybe I'll just sleep without these," she said, tossing the skimpy things on a chair.
But sleep wouldn't come. Gayle's thoughts were full of disturbing images. Images of that huge Great Dane with his huge cock. Of course, she'd only seen the pink tip of it but she could imagine what it must look like fully extended. Then she was tossing, thinking of how it might feel for something so big and hot to be bumping against the cheeks of her ass. An animal like that would be impossible to control! There was no telling what would happen to a poor girl if a Great Dane jumped on her. Ann Marie called him Captain Marvel! And the way she'd touched his cock-sheath was enough to make Gayle's imagination work double-time.
Unable to drift off into sleep, Gayle swung her long legs out of bed and padded barefoot out of the room. The house was dimly lit but she found the stairs easily enough and descended quietly. Maybe a glass of milk spiked with brandy would help her get to sleep. But it was miserable just lying in bed with no hope of getting any rest.
Gayle heard a sound when she'd turned down the hall toward the kitchen. It had come from behind her, from Ann Marie's bedroom. She stopped, her small hand against the wall, trembling.
"Ohhhh, ohhhhhhh, darling!" Ann Marie groaned. The bed thumped, Gayle was sure it was that. She turned and tiptoed softly to the partly open door at the end of the hall. There was a bathroom light on and the scene on the bed was illuminated in all its detail. Gayle wondered if she could bear that much detail!
Captain Marvel's cock was fully extended and her aunt had her fingers wrapped tightly around the slick, hot meat. She was upside down on the dog, licking his blood-swollen knob while he ate noisily between her open thighs. Her back was arched and her small tits trembled proudly on her chest as she licked her lips again and eased them down over the Great Dane's cocktip. Then she licked him again.
Gayle came close to fainting. She leaned against the door frame, her cunt throbbing, her heart pounding. She knew she was hidden in the dark shadows of the hall and could get an eyeful if she wanted. But even as she watched her pretty aunt suck the huge dog's cock, she wondered if she wasn't having some kind of hallucination. Maybe she was still in her bed asleep and was only dreaming this.
"Mmmmmm," Ann Marie hummed, the sounds of her lips sliding up and down the dog's cock growing louder. The big animal flopped spasmodically as his mistress aroused his heavy prick to its fullest extension. As Ann Marie's mouth rode back and she took her lips away from the thing for a moment, Gayle put a hand over her mouth to muffle her surprise. That cock had to be over eight inches long. It was long and thick and perfectly proportioned with a prick-tip that made it look like some far-out space vehicle. It looked like it was made for one purpose only. To penetrate a female's cunt.
Ann Marie had turned now, keeping the big Great Dane on his back. He seemed to know what she was doing because he didn't struggle when she straddled him from above and scratched his chest with her long fingernails.
Slowly, the redhead sank back toward that meaty spike. Reaching behind her she lifted the glossy pink barb so that it fit between the plush halves of her glistening cunt mound. Gayle heard the slippery sound of the knob opening her aunt's pussy. When Gayle heard the muscles close behind his prick, she squirted a droplet of pee down one thigh. She was panting rapidly now and her nipples felt as if they might burn holes in her delicate nighty.
"It's wrong…" she hissed under her breath. "For my aunt to be doing this! It's very wrong." But she didn't turn away from the open door.
"Big boy," Ann Marie whispered, her curvy ass wiggling erotically as she rubbed the soft heat of her insides against Captain Marvel's throbbing cock. He growled and hunched, his ass coming off the bed as he drove another inch into Ann Marie's seeping pussy. Gayle could see the stretched tissues, the dainty folds all penetrated by the dog's huge cockshaft. Behind it, Gayle could see his balls, flattened out from the position he was in, but very large in their black sac. The dog's powerful body trembled as more of Ann Marie's cunt enveloped it. She was squirming in slow circles now, her head thrown back, eyes glazed with excitement. Gayle remembered her scary moment with her own dog and for an instant knew what her aunt was experiencing. Her clit ached, pushing out from her naked slit like a tumid, fevered finger.
"Ohhh," Gayle whispered under her breath. "This is awful to watch. My own aunt! I never would have thought it."
Now Ann Marie's ass was working up and down. The beautiful woman's back arched sharply, then humped up as she gouged herself with the Great Dane's cocktip. The sound of their fucking was sloppier, more urgent. As she lowered her tits to be licked, the big animal made rumbling sounds and his hindquarters plunged upward from the bed in a frantic effort to skewer her more deeply. The shock of his powerful humping made Ann Marie smile. She dug her nails into the fur around his neck and seesawed her hips.
Ann Marie's juices were leaking down in glistening rivulets now, wetting the Great Dane's balls, darkening his fur. The dog lurched and whined as the heat of the redhead's sucking pussy squeezed tightly around his throbbing erection. Gayle watched wide-eyed as her aunt constricted the muscles around her opening, milking at the big dog's prick. The thing was almost all the way into her body now and Ann Marie seemed to be having a wonderful time.
"Ohhh, ohhhhhh, you beautiful dog, you! Ohhhh, Captain Marvel! Ohhhh fuck me, baby, fuck me!"
Roaring with power, the dog hugged his mistress' body with his big front paws. Ann Marie lay herself against his massive chest and hugged him back. Her ass bounced and wiggled as she maintained her position on top but let the Great Dane continue to fuck her with quick, upward thrusts.
"Uhhh, uhhhhhh God!" Ann Marie whimpered. She was trembling and jerking and acting wilder than before. Gayle could hardly stand to stay there watching. She knew what was going to happen. She knew that her aunt wanted that big dog to spurt his jism into her pussy. It was horrifying! It was the most perverse thing Gayle had ever witnessed. But hadn't something similar happened to her?
"I didn't want it to happen," she hissed, hardly able to get the words out between breaths.
Her aunt rubbed her firm tits back and forth against Captain Marvel's chest and hunched her hips with shivering little jerks. Her cunt muscles were making squishy sounds as they squeezed around the base of the Great Dane's prick. They rolled to their sides, the big dog fucking her hard now as his cock thickened. Gayle bit her lip and squirted another little drip of pee onto the rug. She wanted to run and she wanted to stay. She wished she'd never left her room.
"Oh God, he's going to kill her!"
The Great Dane was really going after Ann Marie now. But she was grinning, her eyes rolled up in ecstasy as her pussy began to spasm around his driving, feverish cock! Gayle rubbed a hand down over her own cunt as she watched her aunt climax. The way the redhead moved, the way she convulsed and bucked against the tawny dog's body was something Gayle would never have believed if she hadn't seen it. It was the most carnal display of passion she could imagine. And Ann Marie was crying out with pleasure, kissing and biting the Great Dane's neck as his hot cum exploded deep inside her.
Gayle fled, her hands out to keep her from bumping the wall. She could hardly climb the stairs but she made it somehow, crawling the last few.
"I'm going home tomorrow!" she swore. "I'm never going to come out here again!"
She jumped into bed and jerked the covers up to her chin. But the tighter she shut her eyes, the more vividly the images haunted her. Until at last, panting with passion, Gayle pushed two fingers up into her young cunt and finger-fucked herself into a quivering, ecstatic oblivion.