If Sara wears heels around their place, I think this kind of scene happens on a regular basis after Paul has her little sister Anna move in with them. One tall, buxom, supermodel-esque sister and one lithe, sporty, younger sister - all to himself!

Check out this excerpt from “Kinky College: Surprise Anal Sex Week 14″:

“I think you, me, and Sara should be a regular thing. You’ll move out of that ratty apartment of yours and in with me and Sara. You’ll help me fuck the brains out of your supermodel sister all the time.”

“I- that’s not-”

“You don’t want to?” he asked as he began to pull his fingers free from her aching asshole.

Anna reached back and drove his fingers even deeper into her asshole, then said, “No. You’re right. I do want that. I think… I think that’s perfect.”