Mark continues to take care of his sister’s needs as she drains his balls.
Mark and Denise go to the shower in the master bedroom as it is big enough for both of them. They climb in and start bathing each other. Denise takes her time washing his cock and balls as she studies every inch of it. She lovingly stroked and kissed his cock until it was hard and throbbing again.
Denise stood up and bent over completely bracing herself against the wall and she looked over her shoulder.
“Brother it’s time for you to put that magnificent cock in my ass and fuck me senseless!” She moaned as she wiggled her ass at him.
Mark stepped up behind her big ass and pushed her cheeks apart. She moaned as she felt his cock throb angrily against her tight little asshole. Mark began to work his cock into her rosebud as she whimpered loudly. She had only ever had a small toy in her ass and his cock was way bigger. But she wanted to be fucked by a real cock.
Mark managed to get his head inside of her tight ass. He kept her cheeks spread open wide giving him complete access to drive balls deep into her tunnel. She felt his cock slice into her depths and then his balls slapped her pussy. He stood there allowing her to get accustomed to the cock buried in her ass and to allow himself to get control of his orgasm as she felt like a furnace.
“OMFG MARK! YOU FEEL SO FUCKING GOOD IN MY ASS!” Denise cried out.
She moaned as she felt his cock pull out until just the head remained inside and then slice back into her. Mark began to slowly stroke his cock in and out of her tight little asshole. She worked her tunnel all along the shaft. He had never thought that he would be fucking his sister much less fucking all three of her holes.
Mark took his time fucking her. He wanted this to last as long as possible. He watched her massive ass shivering as she experienced orgasms from having a cock in her ass. Denise started driving her ass back onto his cock. Her massive tits flopped back and forth under her. They slapped the wall and slapped her belly. Her ass rippled around the pounding.
“FUCK YES FUCK ME MARK. MAKE MY ASS YOURS!” She screamed as her orgasm racked her body over and over again.
Mark gripped her hips and drove balls deep into her bowels over and over again. She continued to milk his shaft with her ass muscles. She would clamp down as he pulled out and relax as he pushed in. He loved the way his cock was being sucked on by her ass.
Mark reached under her and grabbed her tits and pulled and twisted her nipples. She immediately bucked against his cock as she felt every bolt of lightning that ripped from her nipples straight to her pussy.
“FUUUUCCCCKKKKK DENISE YOUR ASS IS AMAZING!” Mark groaned.
Soon he felt his cum boiling up in his balls. Denise felt his cock throb angrily as his orgasm approached. She ground back onto his cock until she felt him spraying her insides with his incestuous seed. Mark’s eyes rolled into the back of his head as he felt his cock pumping his guts into her depths.
He had never cum as hard as he had inside her ass. It literally had him standing on his tip toes. Her ass continued to milk his cock as it spewed cum deep into her bowels. His cock slipped out of her ass and he propped himself against the wall of the shower to keep from collapsing.
Denise immediately spun around and dropped down onto her knees as she took his cock into her mouth. She sucked it clean swallowing every last drop. She lovingly look up at Mark with complete adoration on her face. She was a real woman now and she had her amazing brother to thank for that.
She stood up and wrapped her arms around him pulling him tightly against her massive tits. He gripped her massive ass as they held each other.
She looked into his eyes as she said ” Mark I want to thank you so much for what you did for me. I know that you didn’t have to but I am definitely glad you did. If this is just a one time thing then I will understand. But my holes are yours for as long as you want them. You can fuck them anywhere and anytime you want. All you need to do is take them!”
“My beautiful sister I should be the one thanking you for sharing your gorgeous body with me. I could never imagine thinking about stopping fucking you. You can guarantee that I am going to be sticking my cock into all of those holes multiple times and ways!” He said as he felt his cock swelling again.
This was not lost on Denise and she immediately dropped to her knees again. She grabbed Mark’s hands and placed them on her head. She took his cock into her mouth and sucked him down her throat without hesitancy. Mark quickly understood what he was supposed to do and he immediately began to fuck her mouth.
She dropped her hands to her sides and relinquished control over her mouth to Mark. She kept her eyes open and looking up at him as he thrust his cock into her mouth and down her throat repeatedly. She swirled her tongue all over and around his shaft. When he held her down onto his cock she swallowed around the shaft as she lapped at his balls.
She moaned and whimpered loudly as he continued to assault her mouth with his cock. Mark had several girls give him blowjobs but none of them ever allowed him to fuck their mouths. For someone who has never had a real cock before Denise had mastered sucking cock.
Mark had just recently cum in her ass so it was going to be a little while before cumming again. Denise just sat there taking everything he gave her. He would thrust slowly watching his cock appear and disappear from her mouth.
He would then fuck her mouth hard and fast slapping her chin with his balls. He would hold her mouth down onto his cock as she swallowed around the shaft. The whole time keeping her eyes locked onto his as best she could.
Mark pulled out of her mouth as she whimpered at losing his cock in her mouth. He pulled her up to her feet and pushed her against the wall. He grabbed her legs pulling them apart and up pinning her against the wall in the air as he drove his cock into her soaking wet pussy. She wrapped her arms around his neck and kissed him deeply as he jackhammered her pussy. She screamed into his mouth as she orgasmed again and again.
His ass was a blur as he continued his assault on her pussy. He was thrusting upwards so hard that he was actually pushing her up the wall at times. Nothing mattered except his cock inside her smoldering little pussy. After a few minutes of intense pounding she felt his cock throb angrily inside her pussy again.
His cum poured out inside her and ran down her inner thighs. He slowly sat her back down onto the floor as his cock slipped from her battered pussy.
“We need to get something to eat so that we can keep our strength up if we plan on doing this more!” Mark said as he kissed her deeply and passionately.
“Okay and I will be dessert!” She replied with a wicked smile on her face.
