"So handsy."
Gina leans in and gives me a quick, soft kiss, putting the blood pressure cup away. She rubs my chest, then runs her hands to my crotch, rubbing my raging boner through my black sweatpants and she looks right into my eyes. She doesn't say a word. She just blows me a kiss, smirks, then pulls my cock out and bends down to it, licking the tip. I lean back against the cold wall and watch, enjoying every second of the public incest blowjob fun at the doctor's office.
Gina softly chews on the mushroom head, licking the super sensitive underside as she nibbles my spongy cock. God... best doctor visit ever! Gina knows how good I'm feeling. She smiles deviously as she devours my cock, her saliva slowly rolls down the sides of my throbbing shaft as sucks me in tight. Her glossy lips purse around my hard shaft as they ripple downwards, taking me further in. We hear bustling noises in the hallway outside of the door. Gina speeds up, not wanting to get caught. I grab her head and mouth fuck her senseless, pounding down her throat. She bites me though.
"Owww!"
I blurt out. Gina winks up at me, not wanting me to go to fast. She's enjoying the possibility of us getting caught. I grin back, knowing exactly what she wants. I let her take full control. I just sit back and enjoy the bumpy... but very pleasurable... oral ride. She kisses all over my pounding cock, softly chewing on the sides, sucking me in... faster when she hears someone close to our door. Then she slows down and slobbers all over my ready to burst cock when the noise dies down.
I close my eyes, riding out all of the intensely satisfying sensations racing throughout my body. My cock throbs continuously as Gina expertly sucks it, dragging her slick lips back up it slowly after she deep sucks it all the way down. She brings me to the brink... then cools me off... driving me totally wild.
Gina speeds up again, knowing I wanna pump her throat with my cum so fucking bad. As soon as she senses me ready to jizz... she wags her finger back and forth and bites down on my cock softly to keep me from cumming. She does that three times in a row.
My cock is so hard and so ready to cum! Fuck! I NEED TO CUM!
My sexy sister rubs my thighs and sucks me hard, bobbing her head on my cock, constantly licking under the shaft as she drinks my copious precum. We hear the doctor talking to a nurse as he heads to our door. Gina looks at the door, then stops as the doctor talks to a nurse. I FUCKING NEED TO CUM!
Gina looks up at me and smiles as I groan and frown. She's pushing it to the very last second. I'm so disappointed at not cumming yet. She winks at me and starts sucking, deep and fast, bobbing her head wildly as she lovingly rubs my thighs.
"Cum, baby."
Gina mumbles around my insanely throbbing dick. I cum... HARD. My creamy jizz explodes out of my cock, racing down my sister's quick gulping throat as the doctor slowly turns the door knob. He's still talking to the nurse in the hall as he slowly starts to open the door. I rush to finish cumming. Gina hurriedly sucks me dry right before he opens the door. She quickly jumps to her feet as I put my spent cock away... and the doctor enters the room. Gina and I grin at each other like nothing happened as the doctor reaches out to shake my hand.
Gina walks out of the room, smiling at the doctor... and me... licking her lips to make sure she got all of my cum down. She waves at me and heads off. What a fucking day. What a fucking doctor's appointment... What a fucking sister.