One of her tits was now exposed the nipple was hard and stud out like a babies thumb. I longed to suck on it but settled to continue kissing and gentl...y pinched her nipple between finger and thumb, I could feel her arousal and when she let a low moan escape her mouth I new she was as sexed up as I was. Cupping her full heavy breast in my hand I lowered my head and started to suck on my own daughters nipples, I was a little surprised but delighted when I tasted her milk on my tong, I lay her back. She stood in front of an erotic painting and admired the flourish and brushwork of the artist, taking particular interest in the expressions of the lovers as they wrap their arms around each other in a passionate embrace. "The expressions are nowhere near as good as the bodies, what a pity," she thought and strolled ahead. Hips swaying gently as she walked, if anyone would look carefully -and many were- they could make out that she was not wearing any undergarment to avoid pantie lines on her. ” I obediently complied. Tim’s breathing became shallow and quicker. His cock was beginning to harden and I could barely keep myself from popping his length into my mouth. “Slowly” the voice said. “Stroke and massage that little spot lightly with the tip of your tongue. I want to see a drop of his nectar there for your first… It is all about the birds and bees, you know.” He chuckled at his own little joke, but on our end, everything was business.Tim’s hands moved to the back of my head. I let her release the pent-up emotions she'd held under such tight rein. I held my sister, hurting for her. When she turned her face up to me, I wiped the tears from her reddened eyes with a thumb. I looked into her soft brown eyes, smiling. She smiled back, reached up, her slender hand slipping to my neck, pulling me.It seemed the most natural thing in the world. To bend and kiss my sister's lips seemed right. And, as if we'd both been starved of affection, or needed to reaffirm life, the kiss.