The moment Sophia's soft, wet lips wrapped around the head of my cock again, a low groan escaped my throat before I could stop it. Her tongue was hot and slick as she gave the tip a slow, deliberate lick, swirling around the sensitive ridge with lazy circles that made my hips twitch.
She pulled back just enough for her saliva to glisten on my skin, then leaned in again, dragging the flat of her tongue all the way down the underside of my shaft in one long, wet stroke. The sensation was obscene—warm, slippery, and so fucking gentle it almost hurt.
Her massive tits hung heavy beneath her as she knelt between my legs, the pale globes swaying and jiggling softly with every movement of her head. Small droplets of milk still clung to her stiff, dark nipples, occasionally dripping onto the floor or smearing against her own thighs when she shifted.
Her thick, soft body looked even more lewd like this, completely naked, flushed pink from embarrassment and something deeper, her wide hips and plush ass settled back on her heels while she focused entirely on my cock.
She took me deeper this time, her lips stretching around my girth as her tongue pressed firmly against the underside, sliding back and forth in slow, sensual waves. The wet, sloppy sounds of her sucking filled the room. Every time she bobbed her head, her heavy breasts bounced and jiggled, the soft flesh rippling with the motion.
Tim's voice cut through the haze of pleasure. "Big bro, let's play the next match. Tell us your wish."
Sophia pulled back slowly, her lips leaving my cock with a wet pop. She wiped the saliva from her chin and lips with the back of her hand, leaving my shaft standing fully hard, glistening, and twitching in the cool air. Her cheeks were burning red, but her eyes looked hazy, almost reluctant to stop.
Tim leaned forward with that same innocent yet smug smile. "Sophia, big sis… you can just continue it during the race."
Sophia blinked, staring at him. "I have to do it while you guys are racing? I'm not going to play?"
Tim's voice dropped into a low chuckle. "Yeah… like I said. You have to give the blowjob during the whole next round."
She looked at me, hesitant, her teeth biting her lower lip. For a second I thought she might refuse. But then she gave a small, shaky nod. "…Okay. Robbie, tell us your wish."
I stared at her for a moment, my cock still throbbing from the interrupted pleasure. My mind raced. This was the opening I needed. Sophia wasn't going to play this round, which meant the loser would be either me or Tim. I was sure I could beat him if I focused. If I made a wish that forced him to back out, maybe I could end this whole game before it got any worse.
"I have a wish," I said, trying to keep my voice steady. "I wish that whoever loses the next round will have to pay the winner."
Sophia tilted her head, confused. "Pay… money?"
"Yeah." I said with the confidence.
Tim hesitated, his grin faltering for the first time. "How much…?"
I thought fast. "Hmm… how about 500?"
His eyes widened. "But I don't have that much."
"Well, that's my wish," I said, forcing a shrug even though my heart was pounding. "And you were the one who said to do whatever the winner wants."
Tim opened his mouth, then closed it, clearly thrown off. Sophia glanced between us, then gave me a graceful, supportive smile even while sitting there completely naked.
"Yeah, Rob is right. Let's start the game." Her words sent a rush of warmth through me. She was backing me up. Maybe she was finally seeing Tim for what he really was. My plan was simple, Tim wouldn't be able to pay, and when he couldn't, I'd demand the game end. Even if I didn't have 500 either, I had confidence I could win this race and force the issue.
We picked up our controllers. Sophia crawled closer again, settling between my legs once more. The moment the race countdown started, her warm mouth was back on my cock.
Her tongue licked the tip in slow, teasing circles before she slid down, taking me deeper with a wet, sucking sound. One of her hands rested on my thigh while the other gently cupped my balls, massaging them as she bobbed her head. Her massive tits jiggled and swayed heavily beneath her with every movement, the soft flesh bouncing and rippling.
The sensation was overwhelming. Every time her tongue pressed flat against the underside of my shaft and dragged upward, my grip on the controller faltered. She was getting more intense now, sucking harder, taking me deeper into her mouth until she gagged softly, then pulling back just enough to swirl her tongue around the head again.
Saliva dripped down my cock in thick strands, coating my balls. The wet, obscene noises of her blowjob mixed with the sounds of the racing game.
I tried to focus on the track, but it was impossible. Every time I overtook Tim's car, Sophia would moan softly around my cock, the vibration shooting straight through me. Her tongue worked relentlessly. I could see her free hand slip between her own thick thighs, fingers rubbing at her wet pussy as she sucked me. The sight of my gentle older sister touching herself while blowing me made my head spin with guilt and raw, burning arousal.
We were nearing the final stretch. My cock was throbbing violently in her mouth. Sophia seemed to sense it, she sucked harder, faster, her head bobbing with wet, sloppy enthusiasm. Her tongue lashed the sensitive underside over and over while her lips sealed tight around me.
I couldn't hold back anymore.
I groaned loudly, my hips bucking as thick ropes of cum erupted from my cock. The first spurt hit her cheek, the next landed across her lips and nose. Sophia pulled back just in time for the rest to paint her face, hot, sticky streaks across her flushed skin, dripping down onto her massive tits. She gasped, eyes half-lidded, still gently stroking my twitching shaft as I came all over her.
In that moment of blinding pleasure, my fingers slipped on the controller. I lost control completely. Tim's car shot past the finish line first.
I had lost.
I collapsed backward onto the floor, chest heaving, my softening cock still twitching as the last drops of cum leaked out. Sophia sat back on her heels, breathing hard, wiping the cum from her face with trembling fingers. She looked down at the mess on her tits and hands, then slowly realized what had happened.
Her expression shifted from hazy pleasure to concern in an instant. She looked at me, eyes wide. "Rob… you lost."
Tim didn't waste a second. He stood up and walked over, standing right above me with his hand outstretched, palm up.
"My money." I stared at his hand, my stomach dropping. My cock was still half-hard and glistening with Sophia's saliva and my own cum. I sat up slowly, mind racing.
"I… I don't have it right now," I muttered.
Tim's smile returned, wider and colder. "Then what? You made the wish. You said the loser pays."
I opened my mouth, but nothing came out. My plan had backfired completely. I had been so sure I could win, so sure I could force the game to end. Now I was trapped. I didn't have 500. Tim knew it. Sophia knew it.
Tim tilted his head, eyes gleaming with that predatory glint. "Tell you what, big bro. Since you can't pay… how about you give me your sister for a week? She can be my slave."
My blood ran cold. "No. Fuck no. That's not happening."
Tim just shrugged, still holding his hand out. "Then pay up."
I couldn't speak. My throat felt tight. I looked at Sophia, expecting her to be horrified.
Instead, she was staring at Tim with a worried, calculating expression. Then she turned to me, her voice soft but steady.
"I'll do it," she said quietly, cutting me off. She wiped the last of the cum from her cheek, her heavy breasts still rising and falling. "I'll be his slave for a week. But only a week. Not a day more."
"Sophia, you don't have to—"
She gave me that same gentle, reassuring smile she always did when she was trying to protect me. "It's fine, Rob. Really. It's just for a week. I can handle it. I don't want you to be more embarrassed because game."
Tim's grin was pure victory. He looked down at me like he had already won everything.
Sophia reached out and squeezed my hand, her fingers still slightly sticky.
"It'll be okay," she whispered. "I promise."
To be continued...
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