Do It For Charity update

Nebula went to the other side of the room and came back with a bottle of lubricant. She handed it to Peter, who poured some of the oil out onto his cock. Then, taking up position behind Gamora, he pushed forward between her cheeks. 

Gamora’s eyes widened. Lube or no lube, she thought he would kill her. His cock was huge, a pillar stretching her ass to impossible lengths. Her mind whirled; she groaned continuously. 

“Fuck!” Peter gasped. “So warm…”

Gamora’s ass was so tight he felt his engorged cock compress to get in, then throb back against the pressure of her puckered anus and narrow passage. More blood rushed into his stricken cock, Gamora groaning as it grew despite her lack of space, and Peter panted with excitement. Gamora’s ass seemed much tighter than her cunt—much hotter, too.

“Fuck my ass, Peter! Fuck all of my ass!” Gamora cried. Pain was in her voice, but so was excitement. “Go all the way!”

Peter eased himself further into her too small rectum, shivering violently as it gripped him anew. With every inch he fed her, her asshole squeezed him differently—a quivering, straining vise inevitably giving in to the hardness of his erection.

“Nnnnh! It’s so big!” Gamora screamed. “How can there be so much of it? How can it just keep going?”

Despite the way her voice cracked at the last word, Peter didn’t stop, not even for a moment. If he did, he knew he would never get his momentum back. And he wanted what Gamora had demanded. All of his cock jammed inside her ass.

Over half of his manhood now enjoyed the heat of her lubricated asshole. Peter didn’t see how he could ever fuck a hole so hot and needy again. The more he put into Gamora, the more she seemed to enjoy it. It was like she loved being sodomized even more than the natural way. In fact, as he forced another inch of his shaft into her, Gamora’s eyes rolled back into her head, all of her green body shuddering like a junkie both needing and getting a fix.

“Hold still!” Peter gasped, holding onto Gamora’s voluptuous hips with both hands. “If you keep wiggling around, you’ll make me come! Christ, your asshole is actually tightening on my cock! It’s like it’s trying to strangle it!”

“I know!” Gamora cackled, unable to take so much prick without going into a little hysterics. “I can feel you all the way up my ass—all the way in my bowels! I want you to come! I want you to leave your seed where no one else has ever gone!”

She noticed Nebula quivering, staring at Peter’s hips as they pumped away, smashing into Gamora’s nubile ass.

“Hold his scrote until he finishes,” Gamora ordered her.

Nebula felt sheer heat go through her as she reached down to take hold of Peter’s huge balls. Her lips parted softly as she imagined all the cum that would shoot out of them. And with Nebula’s hand gripping his scrotum, it wasn’t long before Peter reached his limit. He grunted as he ejaculated, still pounding Gamora’s ass like he wanted to leave her buttocks permanently splayed. Nebula felt his balls jumping against her fingers, liquid explosions in his testicles as his jizz clenched its way out. 

She looked at her sister. Gamora’s eyes were closed, her green skin turned into pure emerald by her sweat. She keeled over onto her side, panting her breath, holding her belly as she realized how much semen Peter had just stuffed it with. 

Nebula shook as she realized Gamora had just orgasmed. She bit her lip. It had to feel amazing, taking that much cum, knowing she’d aroused a man that much…

“Is that all?” she asked Peter roughly. “I still want it. Come on. Don’t you want your money’s worth? You can have my ass too. While I eat your cum out of my sister for you. Wouldn’t you like to see that?”

Peter nodded. “You really want it that bad?”

Nebula nodded. “Please,” she husked. “It’s my turn.”

“I think…” Peter shut his eyes. “You should suck me.”

“Yes!”

“Suck me until I’m hard enough to fuck you.”

Nebula got down on her knees. His cock was softening, but it was still long. “I’ll do anything for you. I’m your whore. A bigger whore than my sister. Don’t make love to me like you did her. Use me like your fucking cum dumpster.”

She wrapped her fingers around his prick and brought it to her mouth.