"Noooo. Oh Jesus no, no, no!"

He was trying to kiss her on the mouth. Robin moved her head to the side. He kissed her ear instead. He was making grunting noises. His body had gone rigid and he had spread his knees against the undersides of her thighs.

Robin whimpered with fear and tried to push him away. Why was she so damned weak all of a sudden? She had no fight left, nothing left except the odd, burning sensations that were spreading like ripples on a pond, spreading out from the core of her pussy. Yes, she thought of it with that word now… soft and wet and shivery.

Pussy.

Cock.

Her brother's cock.

"Uhhh… Robin…"

Something hot and wet and sticky spurted against the inside of her thigh. Robin knew what was happening. Something she'd read about, heard whispers about at school. It was the way males fucked. The female was the receptacle for the male sperm. The tiny, tadpole-like things wiggled their way up the female's vagina and into the warmth of the womb.

Robin screamed. It wasn't a loud scream nor hysterical. It was only a shrill whistle of air past her vocal cords, hardly a scream at all.

Steve was on his knees, his face red and glazed with shock. He grabbed the end of the sheet and began to mop wildly at the slimy mess that dribbled in whitish strings from her tan thigh.

Robin was panting hard, propped up on her elbows watching him. Their eyes met for an instant, but didn't hold. Steve rubbed furiously at the cum.

"I'll get something from the bathroom, a damp wash rag'll get it off…" He bounced off the bed.

Robin glimpsed his cock before his back was turned and the size of it made her breath catch. She'd never guessed that Steve had anything like that heavy-looking appendage. His cock was absolutely huge! At least six inches long… no more than that. And thick and purple around the tip. That tip, that flared, swollen end had almost made her dizzy with shock. It didn't look human at all, didn't resemble the tiny, shriveled organ of her brother when they'd played in the tub together years before.