“You shall-but do it to her first. Take her, darling; she is now all yours.”

“D… do it to me, Harry! oh-ah! Oh yes! Go faster and you'll make me come again!”

“Wriggle your bottom, Adelaide. I love it so.” Bent over her, I cupped her dangling tits. Her face slewed round to mine. Our lips met, merged, tongues fought, her bottom bounced, smacking against me time and time again, her passage tight, yet spongy, and receiving to my wonder all the inward slewing of my tool, warm-rushing of her breath within my mouth.

“Mmmmmm!” she hummed, and Caroline was all but lost to me in those sweet moments as I pestled Adelaide, my cock clamped suavely as I urged it in and out, feeling her quim then as I did, feeling her slimmer fingers under mine as she more knowingly teased round her spot.

“Come in her, Harry-come in your sister's bottom- let it spout.” Thus Caroline, and as she spoke her hand descended with a SMACK! upon my buttocks. In that same moment Adelaide mouthed at my mouth, “I'm coming, Harry, coming-do it now!”

“Dear god, right up your bum, you naughty thing!” I choked-so infantile are one's words at such times. Already I was spouting, too-cock deep in her, unmoving then. My eyes screwed up in perfect bliss. Legs spread, her bottom balled into my belly, I donated all, cock sparkling with desire in her tight grip until with feeble gasps I loosed my last and felt her draw upon me greedily, our mouths no longer clamped but her head hung and mine a-resting on her neck, in my last quivers, quivering on. Again the silence like a gentle cloud on us, and Caroline's slim fingers tickling at my balls. We slumped, we panted, and lay still, then I drew my cork out with a dragging feel and flopped upon my back beside my sisters hip, she limp, quiescent and unmoving then, her face as peaceful as a baby angel.