"My… God!" she grunted passionately. She worked her ass backward, accepting the hard plunges of his cock. "You're so good! Keep it up! God, don't ever stop!"

She had barely gotten the words out when another flash of hot climax thundered through her entire body.

"Give it to me!" Susan begged, shivering with excitement. Just the idea of having a whole lump of cum boiling away in her cunt made her shake with new desire. "Show… me… unhhh… give it to me, you bastard… ununh!"

At the moment her climax peaked, Mike felt his nuts swell and begin to pulsate. The volcanic-like globs of jism were shooting from his prick. A hard, almost violent jerk ballooned his cockhead painfully. Then his guts seemed to empty inside her.

"Whore!" he spat, poking wildly into her slit.

"Cunt! Bitch! Unh! Whore! Take… take… Unhhhhh!"

Susan experienced another blast of hot release when his scalding juices flooded her pussy. And when the pulsating wads kept coming her moaning took on a tortured quality. For several long moments she was in a state of pure euphoria, writhing about as his jism sloshed back and forth inside her cunt-tunnel. But when he jammed in the last of his massive climax, the pleasure turned to agony.

Mike stopped moving suddenly, his body collapsing. He fell forward, crushing his sister beneath his hulking frame, his teeth sinking gently into the bock ether neck. His breathing was hot and wet, softly laced with grunts.

"Jesus, God," he said finally, "I think I fucked my nuts into you."

"Mmmmm, I wish you would," Susan replied. "I'd like to have all of you inside me."

They lay there for perhaps fifteen or twenty minutes, hardly moving, their bodies recharging. Mike pulled away and lay on his back, his fingers still on her tits.