Tanya moaned softly as she tilted her head forward all the way, taking in more of his cock, while she pumped back and forth with her tits, totally encircling his shaft with her soft skin. As his cock became more slicked up with her spit, his cock moved between her tits with greater ease, intensifying their pleasure. They both rocked back and forth, while Gary's cock expanded largely, his purplish cockhead slipping in and out of her hungry mouth.

"Oh, little sister," Gary moaned, "Suck out my cum and drink it!"

Brian placed his right hand on his hard cock feeling it throb against his fingers. He couldn't believe what he was seeing. His best buddy was fucking his own sister! And it didn't look like the first time either. He was repelled and excited at the same time, thinking of what he and his sister had almost done, and here they were doing it!

Tanya and Gary were oblivious to Brian's thoughts or even his presence, as they continued their movements. Tanya could sense that her big brother was about to shoot his wad as his cock began throbbing violently, and his cockhead grew even larger. She began sucking furiously, running her lips up and down his dick, while she increased the momentum of her tit fucking. And then she felt the first glob of cum hit the back of her throat.

"Holy fucking Jesus!" Gary called out as he pumped his cock deeply into the dick of Tanya's throat. "Suck it, you sucking little bitch, suck it!"

Tanya released her tits and pulled Gary's cock out of her mouth, and held onto the shaft with both hands, jacking it up and down. She watched his spurting cock like a hungry animal as it shot wads of cum into her face. Huge creamy drops of jam collected on her cheeks and ran in streams down her chin and onto her tits. She held her tongue close to his cockhead, allowing the last few spurts of hot cum to squirt into her mouth.