Alex's knuckles were white on the steering wheel. Laura sat shotgun, legs crossed high, crimson sundress riding so far up he could see the lace tops of her stockings. Every turn of the wheel felt like defusing a bomb.
He lasted exactly four minutes before the silence broke him. "Why did you dress like this, Laura?"
She turned, smirk sharp enough to cut glass. "Why, brother? Am I too sexy for you to look away?"
Alex forced his eyes back to the road. "I'm just asking a question. And no. I can look away. See?"
He stared hard at the windshield.
Laura's laugh was low, filthy. "So you prefer me without any dress?"
"Laura...."
"What was your question again, brother?"
He gritted his teeth. "Why. This. Dress."
"Simple." She uncrossed her legs, letting the slit fall open. A flash of black lace garter. "To look sexy in my man's eyes."
Alex's foot slipped on the accelerator. The car jerked. "So you do have a boyfriend?"
"Yes." She leaned closer, perfume flooding the cabin. "Don't believe me? Come. Put your ear right here...." She cupped one breast, pushing it up until the satin strained. "....and listen to my heartbeat. It'll say his name."
Heat flooded his groin. Don't look. Don't.
"No need. I'm good." His voice cracked like a teenager. "But if you have a man, why are you so obsessed with me?"
Laura's hand landed on his thigh: warm, possessive. Nails dragging upward in slow circles. "Because you are my man."
Alex's entire body got cold.
Fuck, it feels good.
"Laura....remove your hand. I'm driving, damn it."
She didn't.
Her palm slid higher....deliberate....and cupped his cock through his jeans. Already rockhard. She squeezed.
"Someone's super excited," she purred, stroking him through the denim.
"That's....that's just a body reaction. Leave it."
"No can do." She leaned across the console, breath hot on his neck. "I'm your sister. I have responsibilities."
Then she bent. Her tongue traced the outline of his cock....wet, slow....right over the fabric. A dark spot bloomed where her mouth had been.
Alex swerved. The car fishtailed. Horns blared. "Sister....please....accident...."
Laura sat up, licking her lips. "Fine. I'll save the fun part for later."
He pulled into the bookstore lot with shaking hands and a dick that could hammer nails.
Inside, the store smelled like coffee and secrets.
Laura moved like she owned the place, hips swaying, heels clicking. She went straight to the Erotica → Taboo shelf.
Alex trailed behind, trying not to stare at the way the satin clung to her ass.
She plucked books with surgical precision:
"Brother Dearest"
"Sinful Steps"
"Forbidden Bloodlines"
"Our Little Secret"
All covers featuring shirtless guys and girls who looked suspiciously like them.
Alex hissed, "Can't you pick something normal?"
Laura pressed the stack against her chest, cleavage spilling. "Why? These are the most interesting."
"There are better books...."
She stepped into his space, voice a sultry whisper against his ear:
"If you want to make things interesting for me… put your huge dick inside my pussy right now."
His cock jumped so hard it hurt. "Laura....we're in public."
She smiled, slow and lethal. "Then shut me up by shoving your cock down my throat right here between the romance and selfhelp.."
She parted her lips....inviting.
Alex's control snapped. He slapped his hand over her mouth....firm....fingers pressing into her soft cheeks. Pushed her back against the shelf. Books rattled.
"If you don't shut up," he growled, voice raw, "I will."
Laura's eyes flashed: shock, then pure, molten hunger. A muffled moan vibrated against his palm. Her tongue licked his fingers....slow, filthy. She sucked his middle finger into her mouth like it was his dick.
Alex's cock throbbed so hard he saw stars. He yanked his hand away, chest heaving.
She smiled....feral.
"Later," she whispered. "I'm holding you to that, brother."
Alex couldn't speak. He just paid for the books with Mark's card, hands shaking, while Laura stood beside him humming innocently.
The cashier didn't notice the wet spot on his jeans. Or the way Laura's thighs pressed together like she was one second from coming in public.