Her tongue swirled suddenly around the meaty, spongy glans of her brother's prick. Her lips compressed around the shaft. Her head moved forward so that she could suck more of the wonderful, thrilling, throbbing prick into her mouth.
She drew on it. She did it again. She heard her brother's groan of pleasure. He began to move his hips back and forth in short strokes, making his prick fuck her mouth.
He took his hand from the top of her head and braced himself against the back of the seat. He didn't have to hold her any more. They both knew he didn't.
She was sucking him freely now – even if they were brother and sister. That didn't matter any more. They were male and female – stiff prick and hot mouth. That was all that mattered.
Or maybe there was another kind of closeness that made it right simply because they were brother and sister. At least that made it seem like something other than rape.
She sucked his trembling prick. She drank freely of the slippery oils seeping from the big-eyed tip. Her tongue slithered all around the incredibly slippery head. The tip probed into the big eye as if seeking more of his juice.
Then her head was moving back and forth, and her hands were sweeping up his thighs to cup his ass. Her hips surged up and down as her whole bottom was fucked and sucked at the same time by Carla's avid mouth and tongue and fingers.
"Ahhhh, Sis!" Whit choked. "Beautiful! Ohhhhh, what a cocksucker you are! Why haven't we done this before! All the time – the wasted time."
His prick throbbed wildly in her mouth. She felt the head expand like a soft plug. It stretched toward the back of her throat, and she knew it was going to happen.
She remembered the flood of sperm that had shot onto her belly from Burke's spitting prick. She remembered the way sperm had spurted from Carla's lips as Whit had flooded the blonde's mouth with his torrent of cum.
She began to swallow rapidly while she sucked. It was like something primeval and instinctive, a preparation for what was to come.
She heard him gasp harshly. She felt his asscheeks clench in her hands. His prick bucked, filling her mouth. Then he cried out heatedly, and the first hot spurt of sperm shot into the back of her working, drinking throat.
"Yaaaaagh!" he bellowed.
Monica drank and drank. She couldn't keep up with the flow. Sperm filled her mouth. It made the bucking shaft become frictionless in her mouth.
At the same time, she was aware of the way her hips were lifting and tossing, of the great charges of sensation bursting through her young body.
Her pussy fluttered and flapped. Her asshole clenched and spasmed around the finger imbedded in it and fucking it so thrillingly.
Juice poured from her pussy hole, gushing from the convoluted walls of her cunt tunnel and rushing forth into Carla's sucking mouth, just as if she were pissing into the open, warm cavern and over the flickering tongue.
She groaned heatedly in the back of her throat and came and came, taking her brother's fluid in at one end and gushing fluid forth at the other.
She couldn't swallow fast enough. She felt her mouth fill with spurt after spurt of cum. She heard the wetness of her mouth. Then she felt the trickling stream that ran down her chin and dripped off onto her chest and dribbled between her swollen, throbbing tits.
Still, she sucked and sucked, and she drew that writhing, fucking finger up her hot asshole as far as it would go.
"Ahhhhh! Ah!" Whit cried finally. "That's enough! Christ, you're going to make it burst into flame! Stop sucking, Sis!"
He pulled back. His prick throbbed wetly and redly in her face. Another spurt jumped from the tip and spattered her lips, dribbling onto her tit.
He groaned and rolled away to the side, gasping and puffing as he settled onto the seat and jacking the last tingles from his throbbing prick.
"Ahhhh, you both came!" Carla gasped. "Me too! God, me too! Now suck my cunt off!"
She fairly lunged upward from her cramped position. She took Whit's position. Her pussy foamed with heat. She spread her cunt lips with her fingers and pushed the open, wet maw over Monica's mouth quickly.
Monica couldn't even cry out. It was all there, very suddenly, very completely, totally wet and quivering.
There was nothing she could do but clamp her lips over the shuddering hole. Her tongue thrust up into the quivering hole, and she could feel the slipperiness of her brother's sperm mix with the silky softness of Carla's vagina.
A notion swept through her that made her fuck her tongue inward so deeply that the root stretched painfully. What a novel way to make a baby!
Her tongue swirled in the hot silk of Carla's cunt. The pulsing clit pressed against her nose. A new, heady flavor burst through her senses, and she drank down the honeyed flow of pussy juice that flooded over her tongue.