Lily slid down the bed to find both siblings with their legs spread. They knew what she was there for. She dove into Claire first, spending a moment nuzzling her clit. Claire moaned into Rob’s mouth as he gently squeezed her breasts and Lily sucked the juices from her. Lily moved down just a touch, and began to put her incredibly long tongue to work, sliding it deep inside Claire’s soaked pussy. She drove it in and out, over and over, tongue-fucking Claire into the heights of ecstasy. Claire came hard on her tongue as the pair continued to make out, and Lily moved over to Rob. His cock was standing impressively upright, and she wasted no time in positioning herself above it, and sucking it down to the root. Keeping her fangs carefully out of the way, she drove him into her throat, over and over, the head of his cock slamming into her, until he shot his cum directly into her stomach with a roar. Lily pulled off to see the couple before her still lost in one another, Rob still hard as a rock and Claire humping at his leg. Clearly they were ready for more. She grinned in delight.
“Robbie dear,” she said, ripping her blouse and skirt off in a single movement. “Do be a dear and fuck me won’t you? Oh and Claire, I have something for you too.”
As they watched, a huge cock grew from her clit. Easily the same size as Rob’s, Claire was transfixed. The couple looked at each other and nodded eagerly.
A minute later, Claire found herself lying spread-eagled on the bed, passionately making out with Lily, who was fucking her senseless from above. Rob was behind Lily, hands on her hips, pistoning in and out of the incredible heat of her pussy. Claire could feed each of his thrusts adding to the force of Lily’s, driving this wonderful, cursed cock deeper inside her than she ever thought possible. She broke her mouth from Lily’s, pulling her close so she could look over her shoulder to see Rob, looking back at her with love shining in his eyes. They shared a moment of closeness amid the carnal torrent they found themselves in, before Rob’s thrusting took on an urgent quality, slamming harder and deeper into woman between them. She felt the enhanced power of his thrusts through Lily, felt Lily swell within her, and together the three of them reached a climax, Rob filling Lily and she filling Claire.
For a moment, they sagged. Rob pulled himself free from Lily, cock starting to wilt after a morning of endless cum. Lily looked over her shoulder at it, and back to Claire.
“Oh no Claire, it looks like he’s starting to give up! Shall we give him a show?”
Claire didn’t understand for a moment, but all became clear when Lily suddenly leapt and spun above her, coming back down with her face directly in Claire’s cum-drench pussy. Lily’s was directly over Claire’s mouth, her wonderful cock nowhere to be seen, and even as she watched a stream of her brother’s hot cum started to drip towards her. Instinctively, she moved to catch it, and pulled down Lily’s hips for more, eating hungrily as she felt her own depths being probed by Lily’s incredible tongue. A dim part of her questioned what she was doing, as she’d never felt the urge to be with a woman before, but this was Lily! It was fine. It was better than fine. It was dark and terrible and it was amazing.