"Get ready to suck out my cum, baby sister!" Paul groaned. "I'm gonna shoot your lung full! Suck it all in, you fucking cum-hungry cunt!"

Robin felt a hot gush of sperm splatter into her throat with such power, it was almost like gulping a steaming cup of hot chocolate in one swallow. And then, almost immediately, another glob of cum forced the first further down her throat.

As her mouth filled to over-flowing, Robin began to actually think he would never stop pouring those monstrous wads of jism into her lungs. Pools of cum collected behind her nostrils and squirted out her nose in violent, squishing rivers. Thick, gelatinous globs of hot cream shot out the sides of her mouth, oozing down on her chin and then collecting on Paul's nuts.

She drank as quickly as possible, trying to breathe at the same time. The greasy fluid mixed with her air and boiled in her voice-box, causing a smacking, gurgling noise. But through it all, she knew only one thought: I want more!

In a distant corner of her mind, away from the violent, raw passion that obsessed her now, she saw herself falling, tumbling downward, splashing into a hot, creamy lake of cum. She thrust her head under the surface of the silvery masses of cream, letting it ooze into every pore of her body. She swam in it, pushing large wads into her cunt, into her shitter, washing her tits, and drinking and drowning in a delicious death.

"Take… it… all!" Paul gasped, throttling into his sister's throat with such power, he was afraid he might snap her neck. "Take… it… and… fuck… fuck!!"

The last spewing wad of sperm thundered into Robin's lungs like a burning poker. Then her brother stopped all movement. After a few seconds, he began relaxing, allowing his sister to pull away.

"Oh God, that was the best I've ever had!" he moaned, stroking her hair. "Thanks!"

The sound of his voice was like a low, growling wind. His hard, muscular body the essence of life itself Robin didn't want to open her eyes, to come back to reality. She wanted to stay between her brother's legs for all eternity, sucking and licking his wonderful cock. Eat his sperm forever.