"Nhhhuuuhhh… Ooooooowww!" Vicky screamed, her slim hips going crazy. The juice ran in glossy smears down Kevin's cheeks and neck. Abby could smell the combined musk of their female heat as she rocked her ass and came gloriously.
"Hurry," she said, giving Vicky a gentle shake, "let's pay him back like we did last time!"
Mustering their last bit of strength, Abby and Vicky stretched out on either side of Kevin's body and took his pussy-slick cock in their hot fingers. Abby jacked his skin back again to completely expose the taut, blue skin of his tip.
"Ohhh! It looks like a nice big lollipop!" Vicky giggled, licking her lips in anticipation.
"Shall we?" chimed Abby, putting her mouth around half the streamlined head. Vicky covered the other side and the sisters began to lick and slurp noisily, cleaning their juices from cousin Kevin's cock and replacing it with their own hot spit. He writhed in ecstatic agony on the bed, his fists clenched with tension.
"Jesus… Ohhh G-g-god!" he moaned, pumping his hips. Vicky had a handful of balls now while Abby tickled her finger up and down the crack of his ass. Then she dipped the same finger in vaseline and eased it up into his guts with a quick and graceful movement. Kevin arched his back and shuddered like he was breaking the sound barrier. The girls smiled at each other, Vicky wiping a little drool from her chin before wrapping her pink tongue back around the head of her cousin's cock.
Abby stroked the hardened gland deep in Kevin's body. Now the two of them were actually nibbling on his shaft, letting him feel their teeth. When it seemed that Kevin was about to spurt, Abby would dig her nail into his prostate and hold the pressure back. She did that three times. Then Vicky nudged her shoulder and frowned.
"You'd better let him go this time, see!" She looked at the boy's face. It was slightly blue from him holding his breath. His muscles stood out like cords of leather.
"Well if he died, he would die happy," Abby laughed, petting the knotted muscle up inside his groin. Then the two of them began to mouth his cock hungrily and she made rubbing circles on the trigger in her cousin's guts. He let out a breath of relief and his hips lurched.
Vicky gave a little shriek as the first convulsion sent a geyser of jizz high into the air. It spattered down on their arms and backs and Abby immediately covered the exploding head with her mouth to drink.
"Let me have some too!" Vicky whined. But Abby knew that it was her turn this time. She'd grown to love the taste of their young cousin's seed. And she was almost positive that it helped her complexion too. After all it was protein, wasn't it?
"Uhhhhh… Ohhhhh… I'm gonna die it feels s-s-so good!"
"Don't die!" Vicky scolded, lapping at his boy nipples like an affectionate kitten, "we've got a long summer ahead of us." Abby wolfed down the thick glops of cum and thought dreamily of how right her sister was! It was going to be a long summer. A long, wet summer. As the curds dribbled from the corners of her mouth, she used her tongue to nurse the last of her feast from her cousin's balls.