She realized suddenly that she was sucking, sucking like a baby sucking its bottle. It was almost a reflex. She tried to stop sucking and she couldn't. As the dog's cock fucked in and out, her lips munched around it, her tongue flapped.

"That's it." Peggy said. "Make him feel real good and he'll give you his jizz. It's a real treat, girl-sweet as syrup fresh from the boiler. Come on, baby, suck him off, make him come."

The dog fucked her mouth faster, growling, whimpering. One of his hot paws was braced on Denise's neck, his claws digging in. For some strange reason, Denise enjoyed the feel of his paw on her neck. She made a tight ring of her lips, starting to enjoy the feel of his cock fucking her mouth, starting to enjoy even the taste and smell of it.

"Come on, boy, give her your jizz," Peggy said. "Squirt it right down her throat."

Denise closed her eyes, sucking, munching, aware of an intense throbbing in her cunt. She tried to visualize cum spurting from the dog's cock and down her throat. She had seen dogs spurt jism before, had secretly watched Tim and some of his buddies jerk off dogs while laughing hilariously. She'd seen that grayish-white dog-cum spurt in long sticky strands-and she'd always wondered what dog-cum smelled like, what it felt like, what it tasted like. But she'd never had the guts to try to find out.

The dog let out a moaning yelp. His prick swelled, growing longer and fatter, turning harder than steel. As his cock swelled it began to vibrate. Then the dog-cock flexed hard and suddenly Denise's throat was flooded with steaming cum. She started to choke on the bitter dog-cum, her head filled with the peppery scent of jizz.

"Swallow it!" Peggy said. "Don't waste it. Swallow it!" She spoke in whispers, but her tone was commanding.

The dog fucked his cock in and out, squirting more and more slimy jizz into Denise's mouth. She had no choice but to swallow the stuff. It was either swallow it or choke to death on cum. The dog kept whimpering, kept humping, kept shooting stream after stream of hot fuck-slime-and Denise glugged it down, sucked it down. At first the alkaline taste, the slimy feel-like swallowing hot oysters-made Denise think she was going to vomit. Then, suddenly, she was liking the taste, the texture.