I walked into the house after my shift and there she was, my little sister Emma, 19 now but still living under the same roof. She was on the couch in a tank top and shorts, legs spread just enough to show the edge of her panties. We'd been dancing around this for weeks, ever since that night we got drunk and she admitted she'd never sucked a dick before. "I want it to be you," she'd said, voice low and dirty. Tonight I was done waiting.
"Get over here," I told her, voice rough. She looked up, eyes wide but hungry. "On your knees."
Emma slid off the couch and crawled to me on the living room floor. Her hands went straight to my belt. "You sure about this?" I asked, even though I knew the answer. She nodded fast, fingers already yanking my jeans down. My cock sprang out, hard as fuck, thick and veined. She stared at it like it was the first real one she'd seen up close.
"Fuck, it's big," she muttered. Then she leaned in and licked the head with the flat of her tongue. Slow at first, tasting the precum leaking out. I groaned and grabbed her hair. "That's it, use that tongue like you mean it."
She opened her mouth and took the head in, sucking hard. Her tongue swirled around the crown, pressing into the slit, then sliding underneath as she pushed more of me inside. Inch by inch she worked it, gagging a little when it hit the back of her throat but not stopping. Spit ran down my shaft and dripped onto her tank top, soaking the thin fabric so her nipples showed through.
"Look at you," I said, thrusting shallow. "First time sucking cock and you're already a natural. Suck it deeper, use that tongue on the underside."
Emma moaned around my dick, the vibration shooting straight to my balls. Her tongue flattened and licked long stripes from base to tip every time she pulled back. She bobbed faster, sloppy and wet, saliva everywhere.
One hand cupped my balls, squeezing while her mouth worked the shaft. I could feel her throat trying to relax, taking more each time until her nose brushed my pubes.
She pulled off for air, strings of spit connecting her lips to my cock. "I want to taste it all," she said, voice hoarse. Then she dove back down, tongue flicking rapidly over the sensitive spot just below the head. Her cheeks hollowed as she sucked, head twisting side to side so her tongue could cover every inch. I fucked her mouth in short strokes, watching my cock disappear between her lips.
"Play with your pussy while you do it," I ordered. Her free hand shoved into her shorts and she started rubbing. I could hear how wet she was, fingers sliding through her folds. She moaned louder, the sound muffled by my dick stretching her mouth. Her tongue kept working, circling and lapping like she was trying to memorize the taste.
I pulled her off and slapped my cock against her tongue a few times. "Open wide." She stuck her tongue out flat and I rubbed the head over it, smearing precum. Then I pushed back in, deeper this time, hitting her throat. She gagged but swallowed around me, tongue still moving, licking the underside every time I pulled out.
We kept going like that, raw and messy. Her jaw must have ached but she didn't stop. Spit soaked my balls and her chin. Every few minutes she'd pull off to lick them too, tongue dragging over each one before sucking the head again like she couldn't get enough. "Fuck, sis, you're gonna make me cum," I warned.
She looked up with watery eyes and nodded, mouth full. Her tongue pressed hard against the vein running up my shaft as she sucked faster. I grabbed her head with both hands and thrust, using her mouth. She took it, gagging and drooling, fingers still working her clit under her shorts.
When I came it was sudden and thick. The first spurt hit the back of her throat. She swallowed what she could but some leaked out the sides, running down her chin. I kept pumping, emptying every drop while her tongue kept lapping at the head, milking me. She didn't pull away until I softened a little, then she licked me clean, tongue collecting every trace of cum and spit.
Emma sat back on her heels, breathing hard, lips swollen and shiny. Her shorts were pushed aside and her fingers glistened. "Did I do good for my first time?" she asked, voice wrecked.
I hauled her up and kissed her hard, tasting myself on her tongue. "We're not done yet," I said, already getting hard again. "Get those shorts off. I want that tongue on my cock again after I fuck you."
She grinned, dirty and eager, and stripped. We spent the rest of the night on the floor, her mouth returning to my dick whenever I told her to, tongue working me over until we both passed out sticky and satisfied. First time or not, she was hooked, and so was I.
