Sarah kicked the door shut behind them and shoved Mia against the wall. "Strip. Now." Mia's hands went straight to her jeans, yanking them down while Sarah grabbed the black harness from the drawer. The thick, veined dildo already sat snug in the O-ring, eight inches of silicone ready to wreck something.
Mia stepped out of her panties, pussy already slick and shaved bare. Sarah buckled the harness tight around her hips, the base of the strap-on pressing against her own clit. She spat in her hand, stroked the fake cock a few times, then pushed Mia onto the bed face down. "Ass up."
Mia obeyed, spreading her knees. Sarah lined up and drove the strap-on straight into her cunt in one hard thrust. Mia grunted, fingers clawing the sheets. Sarah didn't ease up. She grabbed Mia's hips and started pounding, the wet slap of skin on skin filling the room. Every stroke bottomed out, the harness rubbing Sarah's clit raw.
"Fuck, you're tight," Sarah growled. She reached under and rubbed Mia's swollen clit in rough circles while she kept hammering. Mia pushed back, meeting every thrust, juices running down her thighs. Sarah pulled out, flipped her over, and shoved back in missionary style, legs hooked over her shoulders. The new angle made Mia's eyes roll back.
"Harder," Mia begged. Sarah gave it to her, hips snapping fast and mean, the strap-on stretching her open. Sweat dripped off Sarah's tits onto Mia's stomach.

She leaned down and bit Mia's nipple, sucking hard while the dildo kept drilling. Mia came first, cunt pulsing around the silicone, a loud moan tearing out of her throat.
Sarah didn't stop. She pulled the dripping toy free, made Mia suck it clean, then strapped it on herself. "My turn." Mia climbed on top, sank down on the strap-on, and rode it like she was trying to break it. Sarah thrust up to meet her, hands squeezing Mia's ass, spreading her cheeks so she could watch the thick cock disappear again and again.
They switched positions twice more before Sarah finally came, grinding the base against her clit while Mia fingered her from behind. Both women collapsed sweaty and shaking, the harness still strapped to Sarah's hips, the toy glistening between them.
Mia reached for the lube. "Round two. I want it in my ass this time." Sarah grinned, already tightening the straps again.