Interrupt the conversation and tell them you're very horny

"Um, excuse me." you say, and everyone turns to you. "You know, it's, um, been over a day since I last came and..."

You Dad chuckles. "Of course, of course. Our son is in dire need of some relief from our lovely new daughters. What do you say, shall we continue our conversation as we fuck?"

Both Isabelle and Miranda blush heavily and respond, "O-okay."

As you make your way into your parent's bedroom, their bed easily large enough for the five of you, your mates seem more and more nervous. "It's okay." you tell them. "In time, you won't be ashamed of your bodies."

"I-it's not that." Miranda responds. "We've just... never done anything like this before."

You smile and give each of them a kiss. "Just relax." You then remove their clothes and they quickly cover themselves with their hands.

Mom then walks up to them, and cups both of their cheeks. "Don't be shy. We're all family here. Don't think of it as being naked in front of others, think of it as opening yourselves up to others. Letting them get to know the real you. No barriers, no false faces, just you."

Mom always did have a way of explaining things, and your two mates nod as they uncover themselves. Mom then takes their hands and leads them to the bed, where they all lay down, waiting for you.

Dad comes up beside you and holds your shoulder. "Well, son. You did it. I'm very proud of you."

"Thanks, Dad."

He then pats your shoulder, as his cock stiffens. "Now then, shall we?"