Her words trailed off as she lowered her head, holding his big prick with her right hand, feverishly licking and kissing the shaft and flared knob of her kid brother's hard-on. Jimmy moaned, his cock throbbing more rampantly than ever. His cock smelled and tasted delicious, and now Karen's cunt was throbbing with her lust to shove the big salami down her throat, to suck out all the molten cum.

Karen pressed her lips on the tip of his cock lance, then gradually let her lips part. Inch after inch of his gigantic fuck organ pushed down her throat, until she had over a third of the, stiff pisser jammed between her lips.

"Oh, shit!" Jimmy moaned happily.

Karen shuddered with pleasure, her hairy slit leaking in her panties as she savored the feel and taste of the big prick in her mouth. Then she puckered her cheeks and started sucking her brother's boner very hard, pressing her lips around the vein-laced shaft, slurping and nursing contentedly on the tasty stiffness of his prick.

"Unngggh! That's making my cock feel better, Sis! Unngggh! Oh, shit, that really is!" Jimmy groaned and started thrusting his hips off the couch, fucking his aching cock in and out between her lips. "Unngggh! Shit, you're a really good cocksucker, Sis! Unngggh! Work out on it! Suck it hard, make it squirt!"

By now Karen was so immersed in the joy of sucking prick that she no longer cared that she was committing an act of incest with her little brother. Mechanically she bobbed her head up and down, her huge tits shaking under her sweater as she struggled to cram the meaty prick farther down her gullet.

The cock had grown even stiffer now, the knob pulsing wildly on the roof of her mouth. More cum-seed was dribbling out of the tip, and Karen eagerly swirled and swabbed the prick head to lap up all the oozing jizz. Mmmm, it was so delicious! she thought feverishly. Sometimes she thought she loved sucking prick more than all other things in life.