I walked into her room that night knowing exactly what I was there to do. My eighteen-year-old daughter, Lena, was sitting on the edge of her bed in nothing but a thin tank top and panties, legs swinging like she was still a kid. She wasn’t a kid anymore. She’d asked me straight out two days ago if I’d show her how to fuck right, said she was tired of boys her age who didn’t know shit. I told her I’d think about it. I’d thought about it with my cock in my hand every night since.
“Lock the door,” I said, voice low.
She got up and clicked the lock. When she turned around I was already pulling my shirt off. Her eyes went straight to the bulge in my jeans.
“Take those panties off,” I told her. “Show me that pussy you want me to teach.”
Lena hooked her thumbs in the waistband and slid them down. She was shaved smooth, lips already a little puffy. She climbed back on the bed and spread her legs without being told.
I stripped the rest of the way and let my cock swing heavy between my legs. “First rule,” I said, stroking it slow so she could watch it thicken. “You don’t just lie there. You use your body. Watch how I touch you and copy it later on your own.”
I knelt between her thighs and ran two fingers through her slit. She was wet already. I pushed one finger inside, then two, curling them until her hips jerked.
“Feel that spot?” I rubbed it steady. “That’s your g-spot. Most boys won’t find it. You make sure they do or you finish yourself after.”
She moaned, legs trembling. I added my thumb on her clit and worked her until she was dripping down my knuckles.
“Second rule,” I said, pulling my fingers out and wiping them on her thigh. “Suck cock like you mean it. Open your mouth.”
Lena leaned forward and took the head between her lips. She was clumsy at first, but I wrapped my hand in her hair and showed her the rhythm. “Use your tongue on the underside. Get it sloppy. Good girl.”
When my cock was shiny with spit I pulled her off. “On your back. Legs wide.”
I lined up and pushed in slow, watching her face the whole time. She was tight, gripping me like a fist. I bottomed out and stayed there, letting her feel every inch.
“Third rule,” I grunted, starting to thrust. “You fuck back. Don’t just take it. Roll your hips. Meet me.”
She tried, awkward at first, then finding the motion. I picked up speed, slapping into her, one hand pinning her wrist above her head, the other rubbing her clit again.
“Fuck, Daddy,” she gasped. “It’s so deep.”
“That’s the point. You take every inch and you thank me for it.”
I flipped her onto her stomach, yanked her hips up, and drove back in. The new angle made her cry out. I reached under and played with her clit while I pounded her.
“Come on my cock,” I ordered. “Show me you learned something.”
She came hard, pussy pulsing around me, face buried in the pillow. I didn’t stop. I kept fucking her through it until her legs shook.
“Last rule,” I said, pulling out and flipping her again.

“You swallow or you take it on your tits. Your choice tonight.”
Lena opened her mouth and stuck her tongue out. I stroked my cock twice and shot thick ropes across her tongue and lips. She swallowed what she could, the rest dripping down her chin.
I wiped her mouth with my thumb and pushed it between her lips so she could suck it clean.
“Lesson’s not over,” I told her, already getting hard again. “We’re doing it again until you can ride me without help.”
She smiled, already spreading her legs wider. “Yes, Daddy.”