Wildly she began pumping her head up and down over its jutting, throbbing meat. Her lips pursed wetly around the pink stem of his hard-on, so tightly that her cheeks puckered and ached with the effort of sucking him.

I want to taste his cum now, she thought shamefully. Oh God, he's got me so horny… I really do want to drink it… want to feel it spurting down my throat.

Dave seemed tote reading his sister's mind. His cock twitched to absolute hardness inside her sucking mouth, bursting with seed. The teen gasped and held her head over his dick with his hands. A second later he came.

Debby had never swallowed so much jism. Furiously his white cream spouted from the tip of his huge prick, gushing into her mouth. She started swallowing it eagerly, working, her throat muscles to get it all down into her stomach.

Dave kept cumming. The squirts out of his throbbing knob were endless, as if his nuts were emptying themselves of a lifetime supply of juice. The boy cried out as he came in his sister's mouth, rocking his hips, wincing as the last white droplets burned oat of his cum slit.

Finally his cum was over. Debby licked a trace of cum from her lips and looked up at him shyly. She was sure he wouldn't get another hard-on, and she was already starting to feel terribly ashamed of herself. How could she have ever let her brother make her suck his dick, blackmail or no blackmail?

"You know something?" Dave said, smiling.

"What?"

"You have really got a huge pair of tits!"

Dave dropped his hand to his sister's milk white, cherry-capped breasts. He squeezed the spongy globes hungrily, kneading them like bread dough, rubbing his palms hard across her goose bumped nipples.

"Oh, Dave, for God's sake…" Debby sighed. Her nipples stiffened instantly to his touch, but she ignored it. It seemed a little silly to her that Dave would want to play with her tits after he'd just shot such a big wad in her mouth. "What're you…"