Betty was glad that Rod didn't go directly to her cunt with his mouth and tongue. Her breasts were very sensitive and she liked to have them tongued and sucked. She'd often stimulated the nipples long enough to climax without even touching her cunt. But most of the time when masturbating like that she'd rub the hard nipple, or roll each erect tip between thumb and forefinger, until she was balanced right on the brink of a blissful orgasm and then finish herself off by stimulating her clit with her finger or fingers.

She didn't try to hold back the little moans that escaped from between her parted lips as her brother lavished oral attentions upon her big titties. She was proud of her breasts. They were big and round and firm. They rode high on her chest and despite their size they didn't sag when she was standing. At the moment they were jutting toward the ceiling – and into Rod's greedy mouth.

He'd straddled her body on his hands and knees and was darting his hot tongue against the erect nipples, each in turn, then going from one to the other, and she couldn't keep from squirming her ass against the mattress. She used her hands to shove a goodly portion of one throbbing hard-tipped mound into his hot mouth. He sucked greedily and soon she put her hands on his cheeks and guided his active mouth and tongue over to the other throbbing mound of springy flesh.

He tongued that extended nipple while sucking on the firm flesh she'd helped cram into his mouth and her passion soared higher and higher. She didn't want to come right then. Half of the pleasure was building to the melting climax and sometimes she liked to see just how long she could remain balanced on the brink – and this was one of those times.

She tugged at him until he mashed his open mouth to hers. They kissed passionately, taking turns sucking on each other's tongues, nibbling on each other's lips, lashing their tongues together. Then, breaking for air, they rested until their passion had simmered down somewhat.