"How's that, Sis?" Ronny asked. His hand still pulled on her tits. His fingers still rummaged into her cunt slit. His mouth was stretched into a lewd grin.
"Love it!" Mary crooned.
Ronny positioned himself behind his sister. His thick, heavy prick stood out from his loins. It throbbed with his pulse. He glanced down at his sister's ass. Her full, ripe asscheeks glistened in the bright light of the room.
His cock ached out its need to him. He wanted to plunge it deep inside his sister. He wanted to feel her warm, wet flesh grip his prick. It would be wonderful. But a perverse desire overtook him. He glanced again at his sister's ass. He pulled his hand from her tit. He reached between them. He put his hand on her asscheeks.
The smooth, satiny skin, tickled his fingertips. The skin was warm and soft. He used his fingers to spread open the crack of her ass. The little brown ring of her asshole was visible to his gaze.
"What are you doing?" Mary asked. She kept grinding her pussy forward. She couldn't get enough of her brother's fingers in her twat.
Ronny didn't bother to answer. He had an obscene thought. It would hurt his sister, but she was such a slut anyway. He knew she'd get off on it once it was going. He spread wide her asscheeks and aimed his cock. The fingers of his other hand kept digging into her slopping slit. He placed the thick head of his cock at the entrance to her bowels.
"No!" Mary groaned. She had heard of such things, but she didn't want it to happen to her. "Please, Ronny, no!"
"Shut up, you whore!" Ronny snarled.
He grabbed a handful of her pussy hair and pulled. His sister yelped in pain. He liked being cruel to her. She accepted it so easily. His deep blue eyes gleamed with perverse lust. His pelvis pushed forward again, forcing the tip of his cock into her rectum.
"Arrrggghhh!" Mary howled. "It hurts! Stop!"
Ronny pulled on her pussy hair again. "Say you want it! Say, you want to be fucked up the asshole!"
Mary was confused. She didn't understand the change in her brother. It wasn't like him. But the pain of having her pussy hair being pulled was too much. She didn't want him to get rough. There was no telling what he'd do. She had to say she wanted to be fucked up the ass! She had to!
"Please!" Mary got out. Her mind was seared with pain. "Fuck me up the ass!"
"Okay, Sis," Ronny grinned wickedly. "I'll oblige!"
Ronny pushed his fingers back up into his sister's wet slit. He slid his fingers all the way in up to the knuckles. The hot, moist hole of her twat held him tightly. He used his thumb to press on her clit. It caused her to jerk back.
Ronny pushed against her asshole at the same time. His thick, rigid cock slid partially up into her bowels. She squealed in pain, but he didn't care. It was tighter than her cunt had been!
"Aaaiiieee!" Mary wailed. "Oh, God,stop!"
"Such a sweet ass!" Ronny chortled.
Mary's mind was in turmoil. The pain coming from her asshole was too much. She could barely think. It was worse than the first time she'd been fucked. It was burning pain. But the thought of having her brother slide it up her kept her at it. She didn't like the pain, but some masochistic desire within her flared to life. She could feel her loins begin to warm up again. The fingers in her cunt were pure pleasure.
She squealed again as Ronny forced another inch of his long cock up into her. She jerked her hips forward. Her brother's digging fingers touched her clit. The electric touch forced her back on his cock. It slid up into her bowels again. The pain in her asshole and bowels was tremendous!
"Ooohhh!" Mary groaned. "Take it out! Shove it up my cunt!"
"Not on your life!" Ronny laughed. "Your ass is too tight to give up now!"
Ronny's prick felt as if it were being squeezed in a vise. But he couldn't stop now. He was halfway in. The warm, buttery depths of his sister's ass egged him on. He had to push all the way in. He glanced down at her asscheeks. Their full moons quivered as she took in his cock. The thick stump of his prick stood out starkly red in contrast to her white rump. It disappeared between her soft, resilient moons.
"Going to get you, baby!" Ronny growled.
Ronny shoved forward again. His invading cock slid up into his sister's bowels. She moaned in pain. He landed with a hip-smacking thud against her ass. His pubic hair scratched her asscheeks. He was in all the way!
Mary gasped. She tried to catch her breath. The thick, lewd log of her brother's cock was stuffed in her. Her anus was opening and closing, trying to force it from her. But it was no use. She was no match for her brother's superior strength. If he would keep still, she knew she'd get used to it.
"Oooo!" Ronny crooned. "You're so tight! It's like a vise squeezing my prick! Far fucking out!"
Mary shook her head. The pain was dying down. The thick cock no longer felt like a hot iron bar shoved up her asshole. Her masochistic desires had taken over her sweating body. Her brother's probing fingers in her wet, warm cunt were helping, too!
She smiled. Her black hair whipped about her face as she moved her head. Her brother's warm cock dug into her ass. She whimpered slightly as he slowly pulled it out. Her asscheeks rubbed against his prick. He pulled it out until only the head was in her. She smiled as her brother began to slide it back into her body again. She wriggled her body slightly.
"Oooohhh!" Mary moaned. "That feels so nice!"
Ronny could hardly believe his ears! His sister was a real hot one! She had really turned on to ass fucking! He grinned and dug his hand into her cunt again. His fingers slid up into her with juicy ease. His hand was coated with her hot juices. He pushed with his hips. His cock tunneled up his sister's asshole. Her hot depths gripped his cock. His eyes rolled up in his head.
"Great!" Ronny growled. "Oh, Sis, you're great!"
Ronny slid all the way in again. His pelvis ground against her asscheeks. His hair tickled her. She giggled slightly. He didn't hear a word of it. He was far too gone in his own world. His sexual fires were burning. He pulled out quicker. The tight ring of her asshole opened slightly to allow him to pull partially free. The thick, mushroom-shaped head of his prick was still stuffed inside his sister's asshole.
Mary moved her ass sideways. Her brother's cock dug into the sensitive areas of her bowels. She hissed with pleasure. She pinched her tits. Her stiff nipples were becoming sore. She groaned and pushed forward with her cunt to get more of her brother's fingers into her.
"Ronny," Mary gasped. "Fuck me up the ass! Fuck me good!"
Mary's body was covered with sweat. The bed rocked with their incestual motion. The springs squeaked. Mary moved her hips back harsher. She wanted the pace of their sexual encounter to increase. She silently urged her brother on. She grinned as he did so. His long, hard cock began to slide in and out of her asshole faster.
"Good, baby!" Mary cooed. "Soooo gooood!"
Ronny shook the sweat out of his eyes. His face was contorted into a mask of sheer, wanton lust. His eyes were closed. His teeth were exposed. He buried his cock into his sister's ass again.
"Oooohhh!" Ronny moaned. "Fuck, fuck, fuck!"
Ronny was going off of his nut. His balls were on fire. His semen-bloated balls were boiling. He shoved in and out of his sister's asshole. The strong ring of her asshole gripped him tightly. Her bowels scraped the head of his cock. Each thrust into his sister brought a tingle of delight to him. Each withdrawal was wonderful.
"Shake that ass, Sis!" Ronny howled. "Shake it!"
Mary did just that. She used muscles she didn't know she had. She moved her ass from side to side. When her brother slid his cock up into her, she jerked. It was exquisite to feel it glide up into her guts. She squeezed her tits harder. They were hot and swollen. Her cheeks were flaming. And only a few days ago, she'd been a virgin. But her hot blood egged her on to new heights.