You roll her on her back.

You stop thrusting, not wanting to cum despite the temptation of having simultaneous orgasms with Sara, and just enjoy her pussy muscles flexing around your thick shaft. You let go of her hair and grip her wide hips as she grinds her ass back against you.

"Oh God," she pants, collapsing on the bed while you hold her butt up on the air. "That was so fucking incredible!"

"It's not over yet," you chuckle, giving her a playful slap on the ass before pulling out your erection slick with pussy juices. "Please lie on your back, sweetie."

"Sweetie?" she asks, looks over her shoulder.

"Sorry, out of habit," you reply.

"It's okay, Mark," she giggles, rolling onto her back with her legs splayed apart. "I think having your big cock in me is a bit more intimate than calling me 'sweetie.'"

You grab two of her pillows and place them under her to raise her ass up to give you a better angle of penetration. "So are you ready to have my big cock in you again?" you tease, smirking as she stares at the thick, veiny cock saluting her.

"Yes! I need your big, fat cock in my little pussy," Sara screams with a playful wink, to remind you that you still have an audience beyond the thin walls.

Grabbing the base of your shaft you kneel between her thighs and nudge the tip of your cock past her wet pussy lips.

"Fuck me," she growls.

You grab her ankles to ensure that her long legs are kept wide apart and sink your cock back into the warm, wet, and excruciating tight cunt with one hard thrust.

"Fuck her!" Jen yells, muffled by the bedroom wall.

"Yeah, fuck her hard!" Alice chimes in.

You and Sara look at each other and laugh. "Let's give them what they want!" you grin.

"Uh!" Sara replies when you start pummeling her cunt, accelerating your thrusts until your balls are slapping her upturn ass like a coked-up drummer.

Submitting her pussy to your will, your redhead roommate closes her eyes and cups a jiggling breast with one hand and fingering her clit with the other.

You lose track of time and barely acknowledge your surroundings -- you subconsciously hear her loud moans, her demanding screams, and the sound of flesh against flesh -- because you are fixated with pounding Sara's cunt as fast, hard, and long as humanly possible. You vaguely know she has more than one orgasm since they blur from one to another.