As Milly continues rubbing her pussy, you call out to Tracy, without turning your gaze away from the scene in front of you.
"Tracy, come over here."
You hear the water turn off, then Tracy reluctantly comes into view, toweling herself off. She doesn't appear to want to either look at you, or her younger sister masturbating.
You turn your head enough to take both of your sisters into your sight at the same time. "I want you to sit on my cock while I watch Milly."
Tracy's face turns red, as does Milly's. "I- I don't want Milly to watch us while we do it." She glances at her sister, who is still jilling herself, watching the two of you. "Can't we send her away?"
"There isn't too many other places to send her in here," you remind her. "And do you really want her to take her chances around Dad?"
"No," Tracy says. You know she's all too familiar with what her father is capable of. She still seems hesitant, though.
"Perhaps you would rather watch while I fuck Milly, then?" You ask her nonchalantly.
Both Milly and Tracy glance at each other, startled. Milly stops rubbing her slit.
"Milly, remember our deal?" You tell her.
Tracy's shoulders slump. "Milly, go back to playing with yourself."
Biting her lip, Milly starts rubbing herself again, looking relieved. But she's also looking a little excited from the stimulation she's receiving.
Tracy moves over to you and starts to straddle you, facing you, but you stop her.
"No, facing the other way," you instruct her. "So you can watch Milly, too. And she can get a good look at us."
Tracy sighs, then turns around and starts sitting on your lap slowly. You mean back to accommodate her, holding your cock pointed up at her as she moves down. You feel her pussy bump again your cock as she moves lower.
"Spread your legs farther apart, so Milly can see better," you tell her.
Tracy reluctantly does as you instruct, standing with her legs more open, then continues settling down. The head of your cock pops into her pussy.
Milly gasps. "It's going into her!" She doesn't stop rubbing her pussy, and actually starts rubbing it faster.
Now that the first inch or two of your cock are safely buried in Tracy's twat, you let go of your cock and grab onto your sister's hips, pulling her down until she's fully seated in your lap, with your cock buried deep inside her. Milly gasps again, but can't stop looking at where you and her older sister are joined. Despite the amount of fucking it's been getting lately, Tracy's pussy is still tight around you. It's clear your dad hasn't been stretching her out at all, with his small penis.
Tracy moans, either at the feel of your cock stretching her out, or the shame of her little sister watching. Whichever it is, it doesn't stop her from working with you as you guide her body up and down on your invading cock.
"This is what Mommy and Daddy do?" Milly asks, her fingers working faster between her legs. "And what Daddy did to Tracy last night?"
"Answer your sister," you prompt Tracy.
"Yes..." Tracy says miserably. "It's what they were doing." Her voice drops. "It's what Dad was doing to me."
You keep Tracy bouncing up and down your cock, her ass slapping against your thighs. You're leaning to the side a little, so you can still see Milly rubbing her pussy as she watches her two siblings fuck each other. Both actions seem to be getting her more excited, whether she wants them to or not. She can't stop looking at you and Tracy with a strange fascination.
You move your hands up and cup Tracy's breasts from behind. She continues moving up and down on you, her pussy squeezing your cock tightly. This is the second time she's been fucked in front of an audience; three times, if you count last night when everyone else was supposed to be asleep, even if Milly and you weren't. She's also getting excited too, again whether she means to or not. You can feel her passion rising quickly
Milly suddenly moves her gaze from Tracy and your locked genitals to Tracy's face. "You don't seem to mind doing this with him as much as when it was Daddy." That startles Tracy. You have to go back to holding onto her hips to keep her moving on your cock.
"That's not true," Tracy protests. Her hands go up to the sides of her face. I'm- I'm just worn out now."
"You're acting more like Mommy when she and Daddy are doing this than when it was you and Daddy," Milly says, with the honesty that only innocence can bring.
"That's not true-" Tracy begins to say, before her voice and body betray her, and she orgasms around your cock.
"That's the noise Mommy sometimes makes!" Milly says, raising her voice to be heard over her sister's increasing moans. She is rubbing herself even faster now.
"It's not like that Milly..." Tracy manages to gasp out, even as her pussy grinds down around your cock hard. She's instinctively seeking you to release into her, but you've been pacing yourself better than she has, and you're not ready to go yet. You're still sorely tempted to save your load for Milly, who may be less resistant to what you want now. Almost disappointed, Tracy keeps sliding up and down on your cock slowly, her pussy still twitching around your cock. |