She'd been blowing his boner and swallowing his jism every day ever since. As hard as she tried, Cheryl couldn't find anything really wrong with the practice. Kenny had been over eighteen when they'd started, after all; it wasn't like she'd seduced a child.

And the simple fact was, her own little brother had the best-tasting cock she'd ever wrapped her lips around in her life. She knew Kenny enjoyed getting regular suck-jobs from her. It wasn't every boy who had a sexy big sister with such enormous, suckable tits, let alone one who'd suck the cum out of his prick.

"Want me to put my mouth on it now, Kenny?" Cheryl panted.

By now she was jacking his big prick so fast that her fist was a blur. Her feverish meat beating rhythm had already made plenty of precum ooze out of his cock head, coating the spongy cock knob with a sticky sheen.

"Ooooh, your big boner's sure leaking a lot of stuff now, Kenny! Want me to start sucking it for you?"

"Yes!" Kenny gasped. "Oh, yes, yes!"

Cheryl opened her mouth wide, plunging downward, hungrily slurping the first several inches of her kid brother's mammoth fucker between her wet, stretched lips. She clasped her mouth around his cock, shutting her eyes in her eagerness to block out all unrelated thoughts. Then she started nursing on her kid brother's hard-on with a wet, insatiable intensity, hearing her own slurping, gurgling sounds fill the bedroom as she sucked feverishly on the bay's big, oozing pisser.

Kenny looked down at her dazedly, seeing how red and puckered her cheeks looked, a sure sign that his big-titted sister was completely lost in the tender art of cock-sucking. Up and down Cheryl bobbed her head, her enormous tits quivering in the uniform as she shamelessly fucked her mouth with her young brother's prick.