This was an easy image for Amy to picture, so she started enthusiastically licking the cock in rapid, upward strokes, moving her head to lick all sides of it, as though she didn't want to miss a bit of her delicious flesh popsicle. She didn't even notice that she was making slurping sounds, but her sister did.
"Oh, God, that sounds so good, Amy!" she yelped. "Does it taste good, sister?"
Amy took her mouth away from the cock and turned to grin at her sister. "It's the best!" she said, and was going to say something more when she suddenly felt her stepfather's hand take the back of her head and snap it back onto his cock. Simultaneously, he thrust his hips forward a bit, which shoved his dick deeper into his daughter's mouth than it had been before. Amy inhaled sharply through her nose and tried to open her mouth wider, so she would not gag.
"Never mind your sister now," said Dan in a stern voice. "Pay attention to my cock. Try and loosen your jaws and your throat and take it a little bit deeper each time it goes into your mouth."
Properly chastened, Amy said nothing more, but kept both hands on the thick cock, which her stepfather was now thrusting into her mouth with increasing force. The first time it hit the back of her throat, Amy couldn't help it—she gagged and pulled off the dick, coughing and gasping to her stepfather, "I'm sorry! I'm sorry! It's so big, I don't know if it will fit!"
"Oh, it'll fit, alright," said her stepfather with a tight smile. "We're going to make sure of that." He took hold of the sides of Amy's head with both hands and stood still while pushing her face onto and off of his cock with quick, sure motions.
Amy was a fast learner. She soon got in the rhythm of her stepfather's thrusts, feeling her jaw loosen and unhinge a little—it was her mouth's natural way of accommodating more cock. She pushed her tongue out and under his dick as it entered, which allowed for more of it to go into her throat. Her stepfather was pushing in and out pretty hard now, but she wasn't choking. Soon she was just enjoying the throating she was able to give her father's magnificent cock—she was having a great time pleasing him.
"Oh, shit," said Dan, pulling his cock out of Amy's mouth and stepping back. "Baby, you're so good, you're gonna make me cum before I give your sister something," he said. Amy leaned back against the bed, drool sliding down the sides of her mouth. She realized she was flushed with excitement. She wiped her mouth with the back of her hand. Amy really wanted to keep sucking cock—she wanted to feel her stepfather cum in her mouth more than anything in the world. But she also understood that she had to share with her sister.
"Okay, stepfather," she said meekly.
"Good girl," said Dan, patting her on her head. "Now you get up on the bed and let Bella come down here."
The girls switched places lightning-quick. Before Dan had a chance to say a word, Bella's mouth was around father's dick like a suction cup. He looked down and her eyes were already closed in bliss: she'd watched what her sister had done carefully, and she held stepfather's cock tightly in both hands, shoving it as far down her throat as she could—hungrily, greedily.
Dan could feel how excited Bella's sucking was; he felt the way her little hands were squeezing the base of his cock as though she was holding on for dear life. This, in turn, excited him even more. He started thrusting vigorously—he'd stopped holding back his strength, and was throating his daughter as hard as he would if it were his wife giving him a blowjob. He grabbed Bella's head and started slamming his cock down her throat, and the feeling was so new, so exciting, that he couldn't stop it any longer. Dan came in a gushing spurt, filling Bella's mouth with cum.
"Oh, you beautiful little cunt!" he yelled as he came, letting go of her head and rearing back to let his cock pop out of his daughter's mouth. Bella tried heroically to swallow all of her stepfather's cum, but there was too much of it. She gagged on some of it, and some of it spilled out of the corners of her mouth, but most of it went down her throat. She fell away from her stepfather, sitting back on the floor against the side of the bed. Amy rushed down to her, kneeling on the floor beside her sister. She started frantically licking her stepfather's cum off her sister's cheeks—she wanted to taste Stepfather so badly! Amy licked and kissed her sister.
Dan stood back, feeling his cock wilt; he wiped his sweating brow and looked down at his two beautiful stepdaughters. "Thank you, girls," he said, breathing heavily. "Thank you. I'm so proud of you both. I got a little carried away there. I hope I didn't hurt you."
"No, no, Stepfather!" both girls said in unison, gazing up at their stepfather with adoration. "It felt great," said Bella, "and I want to do it again." "Your cum tastes so good!" said Amy, adding, "I wish you'd been fucking my mouth! Will you fuck my mouth, too, Stepfather? Please?"
Dan laughed a hearty laugh. "All right, you two. Calm down. Your old man has to rest after a session like that. How about I take you both out to dinner?"
Amy and Bella hugged each other, and kissed each other's cum-stained lips before turning their faces to their stepfather and saying, "Okay, Stepfather—we are hungry. Let's go eat!"
END