Give it all...

They fucked in various positions, and Beth did her best to defile the bed at every opportunity. As they went at it, she felt a growing desire, a need. It had been so long since...
"David..." she panted, lying on her back with one of Kim's pillows under her butt... "I need you to do something...."
"What is it, baby?"
Beth reached down to finger her butthole, and gave him a pointed look. David smacked her pussy with his cock and gave her a surprised look.
"F-for real? You want me to..."
"Mmhmm..." she nodded emphatically. "It's been so long... and I crave it..." she propped herself up on her elbows. "Does Queen Kim not let you...?"
"Never..."
"Brian doesn't like it... so I haven't had a proper buttfuck in a long time..."
David sighed. "Where did you come from?" he shook his head.
"If you don't want to..." she put on a sad frown.
David stuck a finger in his mouth and began probing her knot with it. She shuddered. "I definitely want to."
Beth flipped over and spread her ass cheeks. David spent a few minutes with some lube and his fingers, probing her asshole and warming it up. It wasn't until he began to press on her hole with his cock, that she remembered his oversized tip.
"Fuuuuuuuuuck...." she gripped the bedsheets hard. "Slow...baby...it's been a long time..."
"I can tell... it's the tightest thing I've...ever...felt..." After a few minutes of agony, he managed to pop his cock inside her ass. She was breathing hard. So full.... I've missed this.... fuck it hurts....
"Are you okay? Should I stop?" David rubbed her back.
"Don't you dare..."
After a while, David found his rhythm, and the pain gave way to the sublime pleasure she craved. She screamed obscenities and babbled like a lunatic as he plowed her long neglected asshole.
"Jesus Christ..." David whispered. "Your ass is amaaaaazing... I'm not going to last long, baby."
Beth slid a hand between the pillow and her body to work her clit. "Cum in my ass, David."

As he picked up his pace, she worked furiously on her clit, until the dam burst and she squirted all over the bitch's pillow.
"Yes..."
"Fuck baby...I'm going to cum."
"CUM IN MY ASS!"
David obliged, and Beth reveled in the feeling of hot cum pumping her ass full.
"Shit...I came more than...it's all over..."
Beth scrambled awkwardly around, putting David's cock in her mouth and sucking it clean of cum and ass juices.
"Fuck...that's... you're a nasty girl, Beth."
"Thank you." She swallowed, and then smiled. "I think I ruined your wife's pillow."