She wants dick.

Olivia stands up, steps back, and removes her skirt. Then reach back with one hand to grasp the butt plug tail and the other hand rubbing the head of your cock, she says as she pulls the tail-plug out of her butt. "I want you to take this big hard dick and fuck my tight ass."

Olivia then turns around and drops to her hands and knees. Lifting her ass in the air and giving it a seductive wiggle she says. "Come on big boy break my ass with that monster."

Watching Olivia's tight ass and dripping sex wiggle seductively in front of you, you slip from your chair to kneel behind your girlfriend's best friend. Your slab of man meat coming down on her ass with slap causing her to hum in pleasure and press her butt against your dick and wiggle it some more, the head of your dick reaching her waist and only 3/4s of your dick was resting on Olivia's butt and lower back.

Placing your hands on her ass and spreading her cheeks you line the head of you trouser-snake up with her winking star, pausing with the tip of your dick pressed against Olivia's ass hole you get an idea, reaching behind you you grab the Marker off your desk as Olivia begs. "Come on Finn don't keep me waiting."

Removing the cap from the Marker with your teeth you say. "Oh I don't plan to." As you write 'CAN'T LIE,' 'ALWAYS READY,' 'ALWAYS CLEAN AND LUBBED ASS' and 'ELASTIC ASS, PUSSY, MOUTH, AND THROAT' on Olivia's lower back before capping the Marker and setting it on the chair you'd been sitting in. Then grabbing her hips start to push your long thick cock into her ass.

"AAH, Fuck!" Olivia cries out in pleasure as your long thick man meat forces her back door open. "So big. So good. Keep going." She begs in pleasure pushing her ass back to meet your forward push.

Getting about a 1/3 of you dick into her ass hole you start thrusting pushing more and more of your dick inside her with each thrust. "FUCK, fuck. So good. More, MORE, don't stop till you get the whole thing me!" Olivia cries out in excitement and pleasure.

Finally your pelvis is slapping against Olivia ass cheeks and her stomach bulging somewhat with each thrust as you thrust the full length of you member in and out of her ass. As Olivia is moaning in pleasure and meeting you thrust for thrust as you continue to plow her tight as you decide it's time to ask some more questions and thanks to what you wrote with the Marker earlier she'll give only truthful answers.