Yes - time for a blowjob

I checked my phone: 19 minutes left. “No,” I said. “You're gonna suck my cock, sis.”

“Yes, sir,” she smiled, kneeling down in front of me and pushing my legs apart. “Fuck, my ass stings,” she grinned sheepishly.

Letting Emily take control, I brushed her dark hair behind her ear as she teasingly pulled down my pants and underwear; eventually my cock, now extremely hard, popped out, and she licked her lips lasciviously. After glancing up at me, almost looking for permission, she gently grasped it and stroked. Slowly, she brought her lips to the tip and kissed it, and a shiver danced up my spine.

“You done this before?” I asked, attempting to distract myself from the intense anticipation running through my body.

“A couple times,” Emily winked, then wrapped her lips around my head.

“Oh, shit,” I moaned as she swirled her tongue around my sensitive tip, and a shot of adrenaline zipped through me. My eyes rolled backwards in pleasure, and I entwined my fingers in her soft hair, gently pushing her down.

Succumbing to the slight pressure, Emily slowly engulfed more of my cock until the tip brushed the back of her throat; she pulled back and popped it out of her mouth, grinning at me as she spat on a hand and spread the saliva along my shaft. Then, stroking slowly, she started sucking on my scrotum. A weird yet pleasurable sensation spread through my body, and I relaxed further into the chair.

“Holy crap,” I murmured.

“You like getting your balls sucked, huh?” she asked teasingly.

“Don’t stop.”

She didn’t reply, instead kissing the length of my shaft and taking half of it into her mouth in one swift movement. As I locked eyes with her, I saw tears welling in the corners of hers as she fought not to gag – gradually, I felt my sister’s throat widen to accommodate my cock, and Emily slid her lips down until its entirety was engulfed in her beautiful, wet mouth. She held it for one, two, three seconds, then withdrew, coughing softly. “Didn’t think I’d be able to do that,” she smiled proudly.

“You’re a good little cocksucker, aren’t you, sis?” I grinned.

“Oh yeah, I’m a dirty whore,” she said sultrily as she kissed the tip.