She was eighteen and home from college for the summer when it started. I walked in on her changing, and there they were—those big, heavy titties hanging free, nipples dark and stiff from the cool air. "Fuck, baby," I said, voice already thick. "Look at those tits."
She didn't cover up. She turned toward me, letting them sway. "You like them, Daddy? Been staring at them for years, haven't you?"
I crossed the room in two steps. My hands grabbed them, fingers sinking into the soft flesh. They were warm, full, perfect handfuls with thick nipples that poked into my palms. I squeezed hard, making her gasp, then leaned down and sucked one into my mouth, tongue lashing the tip while my teeth grazed it.
She moaned and pushed her chest forward.

"Suck them harder. I know you've wanted to."
I did. I sucked until she whimpered, then switched to the other tit, biting down just enough to leave marks. My cock was straining against my jeans. She reached down and freed it, wrapping her fingers around the shaft and stroking while I mauled her tits.
"These are mine now," I growled against her skin. "Daddy's titties."
She dropped to her knees and pressed my cock between them, squeezing those soft mounds around me. The head pushed up between her cleavage with every thrust. Spit dripped from her mouth to slick the way. I fucked her tits fast and dirty, watching the tip disappear and reappear, precum smearing her skin.
When I couldn't take it, I hauled her up, bent her over the bed, and yanked her shorts down. Her pussy was soaked. I slammed into her from behind, one hand reaching around to grab a swinging tit, pinching the nipple while I pounded her.
She pushed back, meeting every thrust. "Fuck your daughter, Daddy. Use my tits and my cunt."
I flipped her onto her back so I could watch those tits bounce. I grabbed them again, using them like handles while I drove into her. She came first, cunt clenching, mouth open in a scream. I followed, pulling out to shoot thick ropes across her tits, painting them white.
We didn't stop there. That summer became a blur of raw fucking—me sucking her tits while she rode me, her jerking me off between them until I coated her face and chest, late-night sessions where she'd climb into my bed and offer her body with a simple "Want to play with your daughter's titties again?"
By the end of August she was riding me slow in the morning light, those heavy tits swaying in my face while she whispered how good it felt to be Daddy's secret fucktoy. I came deep inside her, holding her close, already knowing this was only the start.