She found the book in a dusty corner of the used bookstore, its cover plain black with the words "Smut Dictionary" stamped in cheap gold. No author, no ISBN, just page after page of dirty terms and crude definitions. She bought it on impulse and took it home to her boyfriend, dropping it on the bed between them.
"Read it," he said, already hard in his jeans.
She flipped it open at random. "Cocksucker. Noun. A person who takes a dick in their mouth and works it until it shoots."
He grinned and pulled his cock out. "Prove it."
She got on her knees right there on the floor, wrapped her lips around the head and sucked hard, tongue swirling under the ridge the way the book described. Spit ran down his shaft as she took him deeper, gagging when he pushed her head down. The dictionary lay open beside them. She read the next entry while her mouth was full, words muffled around his meat.
"Fuck.
Verb. To slam your cock into a wet hole until you both come."
He dragged her up, bent her over the bed and yanked her panties aside. One thrust and he was buried in her cunt, pounding fast and mean, balls slapping her clit. She kept reading between moans.
"Pussy. Noun. That dripping slit between a woman's legs that begs to be filled."
He slapped her ass and fucked harder, telling her how tight her pussy was, how it clenched every time he bottomed out. She came first, legs shaking, cunt pulsing around him. He didn't stop. He flipped her onto her back, spread her wide and kept driving in while she read the next page.
"Creampie. Noun. When a man empties his balls inside a cunt and watches it leak out."
He groaned at the word and unloaded deep, flooding her. When he pulled out, thick white cum spilled from her used hole. She dipped two fingers in it, brought them to her mouth and licked them clean while he watched.
They kept going. The book became their script. She read "rimjob" and he had her on all fours, tongue pushing into her ass while his fingers worked her clit. She read "deepthroat" and he held her head still, fucking her throat until tears ran and spit coated her tits. Every filthy definition turned into action, raw and loud, no romance, just sweat and grunts and the wet sound of bodies slapping.
By the time they reached the last page, she was on her back again, legs hooked over his shoulders, his cock stretching her sore pussy for the fourth time. She read the final entry out loud.
"Repeat. Verb. To do it all over again until neither of you can walk."
He grinned, slammed in deep and started over. They didn't stop until the sun came up, the book closed and forgotten on the floor, their bodies marked with bites and bruises and drying cum. The dictionary had done its job.
