All of you have a 4-way

Alex's eyes are fixed on Emma's now rising cock as he slowly crawls on his hands and knees over to her and timidly wraps as much of his hand as he can around her meat and starts to steadily stroke it until it is fully erect.

"You're such a little perv," Tiffany says snapping your attention away from Emma and Alex. "I can't believe you didn't say anything about him the whole time, while he was watching or when he..."

"I'm sorry, it happened too fast," you interrupt not wanting to hear her finish that sentence," I couldn't really think of anything to say, and then it felt so good, I..." this time she interrupts you with a hand on your face and a wink as she wipes her drying cum off your face and shoving her hand into your mouth allowing you to lick her cum off her fingers.

"Think how good it would feel with a real dick in your ass," she says causing both of yours eyes to drift down to her half hard rod bobbing up and down between the two of you. Instinctually you move your head down and wrap your lips around the tip of her massive cock. Emma is very well endowed for her age but she still a some catching up to do compared to her big sister who's now hardening tip is enveloping the entirety of your mouth.

Just as Tiffany begins to stretch the back of your throat and releasing tasty gobs of precum into your mouth, you hear Emma's voice call to you. Removing her tank top, and revealing her now small and perky, but if her sister is any indication they won't stay small for long. "Hey Doug I think you owe Alex a little pay back don't you think," she said with a grin. Causing Alex and you gasp as he pulled his mouth off of Emma's to look back at you from all fours with worried eyes. "Besides he'll probably need to be loosened up before I could get in him," she chuckling.